It's known that this study was originally unsound (Black could force a draw), but it's been fixed by the composer. The published correction is to add a white pawn on c4. Then at 11:58, 11.Nc1+ does win because the extra passed pawn makes all the difference, e.g. 11...Ke4 12.Kb2 Bd8 13.Kxc2 Kxf5 14.Kb3 Kxe6 tablebase win. The main variation with all the underpromotions is not affected.
@Rocky64 : I was going to post these infos but found out you had already beat me to it ;). Also the study stops after 12.e8=R! but Liburkin gave the continuation 12...Bg7 Re6 as an example (there are other moves which win, any move attacking the bishop but they're just losses of time ultimately as white does have to go through this continuation with the key move Rb1! when the pawn is on c4) : 13.Be6 Bd4 14.Re1 (Rd4 or Rd6 are again winning but just losing time) Bf6 15.Rb1! (15.Re6 just loses time again) Kd3+ 16.Rb2 and the ending is won (Liburkin still gives more moves, but they're no longer forced even though the idea stays the same: 16...Ke2 17.c5 Kd118.a4! (only move) c1Q+ 19.Nxc1 Kxc1 20.a3 Bxb2+ 21.Ka2 and the pawns are unstoppable (white could also have played for instance 17.a4, 18.a3 and 20.a5 or 20.Ka2 instead with still a won endgame). Also to be noted that black can't try to go to a3 with their king to attempt to exploit the pin and try to mate while taking some of the pawns : after 16.Rb2 Kxc4 17.a4 Kb4, there is 18.Nd4+! which unpins the rook with an easy win (same thing after 16.Rb1 Kxc4+ 17.Rb2 Kb5 18.Nd4+!) To finish, it migth be worth mentionning that 8.b7 is forced because after white gave their bishop, black now has gained access to the d4 square as an extra square on the long diagonal to threaten mate. So 8.Nf6? would allow 8...Be5 9.Nd7 Bd4! (not Bg7 or Bh8 10.f6!) 10.Nxd4 c1=Q# Edit : last thing, in the version without the pawn c4 that you showed, 8...Kd3 is indeed a cook, but the best attempt for white would be to keep their b pawn and their d8 knight and to play immediately 9.Nc1+. Then the following contiuation is forced : 9...Kd2! 10.Kb2 Be5+ 11.Kb3 Kxc1 12.Nc7!? Kb1! 13.b8Q c1Q 14.Ka4+ Ka1! and the c7 knight is lost and with queens on board, the white passed pawns don't compensate enough for the bishop to grant a win.
The underpromotions are so satisfying lol but sadly that one black king move makes it a draw. It would be cool if white really wins the game cuz it's like an entire army is trying to stop a dangerous pawn and an assassin bishop😄 Because of this puzzle, I just remember an another chess puzzle that I saved in my files that has a similar situation to this one. The setup is: ⬜[WHITE]⬜ King -> a3 Rook -> f7 Bishop -> f1 and g1 Pawn -> b2, b7, d4, f6, and h7 ⬛[BLACK]⬛ King -> a5 Bishop -> b8 Pawn -> a4 and b3 It is white to play and win. Idk who composed that puzzle. It is just a puzzle I found on a FB page
Wow amazing puzzle! I was screaming at my screen when he said that promoting to a queen was wrong and then I was left speechless when I saw the stalemate. Also the overall idea of having to promote 3 times into everything but a queen made this puzzle next level. Not even a hardcore chess fan but that was amazing.
Impressive that you had the intuition to know getting the queen was incorrect. I was thinking “if getting the queen is wrong then I’m okay being wrong.” After seeing the stalemate, I was not okay being wrong
5:53 Not sure why you didn’t mention that Black can play Bd4 here (If Nxd4, then c1=Q#). I think White’s only move then is Bf4 to defend c1 with a 2nd piece.
Nice spot, but it seems to be easily countered since black seems to be out of moves after white moves Bf4. I think this option may have been cut from discussion to save on the length of the video.
@@ryanpaulmarcoux3813 then still white could move back Bg1 and and if black takes it's no more attacking that diagonal, and if not then bishop with take it on d4
@THE LEGENDERIAN It's Black's turn after white goes to Bf4. Black would not want to play Bd4, in the first place, since after white goes Bf4 there is no good answer from Black.
Now people can understand that less pieces on the board does not mean it’s necessarily simple. Sometimes they are more complicated than it looks on the surface.
@Nelson Lopez I think I have a solution: At 6:06 After black bishop takes white bishop, white has to play N f6, instead of P b7. (No need to go for premature promotions to bishop and rook) Then, if black plays B e5, white has to play N g4. Then if black plays B g7 or h8, White can block the black bishop by playing P f6. White wins subsequently. I request you to analyse further
When white plays N g4, black can play B d4. If white knight gets the black bishop, the black pawn will become queen and black will win. Otherwise, any other moves from white would lead to black king to d3 and win
Nelson, I'm very glad you enjoyed it and thought it interesting enough to present to your viewers. Cooked or not, I agree, it's a wonderful composition and you did a great job presenting it.
@@MrEdwardCollins after playing it a few times I found the win, but its extremely different and involves sac'ing the rook It turns to a normal endgame in fact
I put the final position on SF when Black plays the correct Kd3 instead of Be5 and the brilliant underpromotions following that line. SF found a way for Black to hold and draw but it's a little crazy. White's best move would be 1. Nc1+ which Black responds with 1...Kd2. Line goes on with 2. Kb2 (and not 2. Nb3??, Kd1 and white is losing as Be5+ cannot be avoided), 2...Be5+ 3. Kb3, Kxc1 4. Nc7!, Kb1! (Both 4...Kd1 and 4...Bxc7 actually loses according to SF, I won't go into detail) 5. b8 = Q, c1 = Q 6. Ka4+, Ka1 and Black holds.
at 11:00 Nc2+ Ke4 Nf6+ Kf5 Nd7 and after the promotion white wins with the extra knight and 2 pawnes if at 11:00 Nc2+ Kd2 Kb4 Be5+ Kb3 Kc1 Nc7! if bishop takes then e7 or even if he allows promotion on b8 , in both cases both sides get queens which get traded and the position is winning.
Neither of the knights can go to c2 from that position. Nc1 Kd2 line is also a draw, not a win for white. Neither of the kings can go to b4, either, from where they are. And queens do not get traded under optimal play.
at 11:00: if the king moves on d3 right here, it doesn't look like you need to sacrifice b7 or e8. you can just Kc1. at 6:00 : can you explain to me why black can't ignore the bishop gift and simply do Bd4 ? I don't see any move white can do to block black from looping Bd4 - Be5
For 6:00, after Bd4, I think white can play Bf4, replacing white knight's job to protect c1 square. So, If black move the king and check with black bishop, white can simply take that bishop with knight without worrying c1 square. Correct me if I wrong
1st point that is the best move but still it leads to a draw 2nd point after Bd4 theres a good move Bf4 after black does Bxb6 and white does e7 its checkmate in a view turns
12:47 I looked around and if king moves away to set up bishop checkmate then you do have forced win with Nc1+ and Kb2 and you escape checkmate threat and sac both knight and push to e7 then both will have queen then you forcefully trade queens and win by sacing one pawn and make queen with other and win. (if black under promotes to knight then queen vs knight and bishop endgame is winning) Great puzzle though
It's been a minute since the last Mark Liburkin puzzle...😁😁 I can't get enough of puzzles where you can't queen a pawn because the octo-directional nature of queen moves can cut off so many potential escape squares for the enemy king and create stalemate positions. I felt like the easiest moves to figure out were Ne4+, b8(B) and e8(R), the latter 2 due to what I just mentioned in terms of queening a pawn leading to stalemate.
There is a class of chess players called solvers that take composed studies and solve the (or “cook” them, if they are flawed). Might be worth checking into…
It's a beautiful game whether you want to be a watcher, a player, a problem solver, or whatever. Between the geometry and the logic and the complexity with so few pieces and a small board size, I find it irresistable.
The study 8/3PP3/8/P6p/b6p/6kP/2P2p2/5B1K by Ernest Pogosyants also features underpromotions to knight, bishop, and rook (unless IT'S flawed, too ...) via: Andy Soltis, Chess To Enjoy
1. Nc1+, Ke4 2. Kb2, Kf5 3. Ng7+ Kf3 4. e7 Ke7 5. Nf5+ and from that point you can maneuver around into a check mate, if at any time that bishop leaves to check the king you just take the pawn and with two knights you can walk your pawns up the side. It’s a win for white. Edit: I’ve played it out 5 different ways and white always wins if they don’t blunder
Kd2 draws for black after Nc1+. The line goes 2. Kb2 Be5+ 3. Kb3 Kxc1 4. Nc7 Kb1 5. b8=Q c1=Q 6. Ka4+ Ka1. 7. Regardless of what white plays here there is perpetual check
I have a question. At 5:45 why couldn't you just move the bishop to d4 forcing it to be taken by the black bishop and then take it by the white knight? I'm still learning the intricates of chess so some advice would be helpful!
Been playing recreationally for 15+ years. I caught the first under promotion but the other two blew my mind. So many tricks with this one that I could not keep up. I know I’m no master but after this puzzle I’m super humbled and am laughing at myself for how tough this was. Excellent vid.
Hi, one interesting (I think) line: when we play BH2 (5:56 in video), back doesn't capture it, but plays BD4 - Threaten king move and chekcmate. Knight can't take, then C1 checkmate with pawm promotion. If BG1 happens, there are no tricks with the B pawn.
At 11:00 if you move Nc1 check, then it opens up some options. If he moves the king back, then you can do the b8 move. If he moves Kd2, then it gets complicated. It allows white king to escape and both sides can eventually get their queens back. White by doing Nd6, then e7, e8. This after Kb3 and white loses the knight on c1. I didn't fully play it out after that, so black may have a perpetual check with eventual mate.
6:11 i cant play for black that well, but does knight to f6, bishop to e5, knight to d7 work? Its a turn before your challenge though, but it blocks/stops the bishop from being active and lets you push the pawn on e6 forward.
I've seen this puzzle before but I think white has a pawn on g2. That pawn is important for white to win a resulting queen and pawn endgame after Nc1+ Kd2 (Ke4 obviously loses in this version). For the version in the video, black can hold the endgame.
...Kd3 was pretty unfortunate, and pretty clever too. The point is that Black wastes a move with ...Be5 and ...Bxb8 which is 2 moves, so Black plays ...Kd3 first and Black directly takes ...Bxb8 from h2, which is also 2 moves, except Black plonked in an extra ...Kd3. Still, phenomenal study! This small king move doesn't make the study less beautiful! And I'm happy to report I got all the answers right when Nelson asked to pause the video (including the underpromotions!) Thanks for the amazing video Nelson!
So once white moves its bishop to h2 @ 5:56 what is to stop black from bd4? White can't take with the knight because it is busy guarding c1? All white can do is move its bishop back to g1, and black can perpetual to stalemate? Remember that when the puzzle says white to play and win, all black has to do is force a draw to ruin the puzzle.
5:53 what if black moves the bishop to D4 isn’t that mate? Because if white moves there bishop to E5 you take and still have mate and if white takes with the horse you promote the pawn and it’s mate. Or am I forgetting something?
Very cool setup. Wow! What if in the beginning position you have an extra white pawn on e2? It never moves but would remove the option of d3 for the black king at the end of the game. I haven't fully analyzed the situation. But perhaps it would be an elegant solution to the imperfection of the setup.
Honestly the white pawn can be in a lot of squares and it probably counters Kd3, because the line after Kd3 is simply a positional variation rather than a tactical one.
@6:29 You covered pawn moves, but what about Nf6 with Ng4 idea? You're just going to advance to f6 if black tries Be5 -> Bg7/Bh8 EXCEPT Bd4. The knight can't take the bishop and there's no other defense. A significant omission in the analysis, I think.
You gave yourself the answer why this doesn't work. Sometimes he miss ideas people could have, but i think it would be to much work and a to long video to cover every single move.
@@lenalittle4193 I agree with respect to "similar ideas" like all the different pawn moves. I just felt that this particular variation was an exception to the same idea that he illustrated before the bishop deflection to h2 and worth a call out that it would not work. And in comments, a large number of viewers also noted that idea and wanted to explore it. Nelson does a great job with these and I don't think constructive criticism diminishes his work. He's even made videos correcting himself when he feels the gap is egregious enough and I respect him for doing that. That's why I made the comment. To give him the choice :)
@6:30 why isn't Nf6 considered? if Be5, we simply go Ng4, attacking the bishop again as per usual. Also defending D4 and F6, so if the bishop goes g7 or h8, we can still block with the pawn on f6. I'm not really a chess player, so I'm unable to see what black can do to prevent this. He can't move the king first to set up the checkmate, as our knight then gets to g4 and attacking the bishop already on h2, while also defending the important e5 square. what am I missing?
Hey, Mr. Vibes (I was going to nickname you CV, but that sounds too much like work). Just a quick thank you, and I am sure I am not alone in that sentiment. I have some issues with anxiety and depression that can occasionally get pretty severe. Staring at puzzles with you and the other subscribers on your channel helps me get through the bad days, so again, thanks. Good things happen in ways we don't always expect, keep it up.
At 12:01 can’t black win king d2 then Knight to b3 check then king to d1 white is out of checks. If white knight d4 promote pawn if king runs b2 then bishop e5 check knight d4 bishop d4 king b3 black promotes pawn and wins
After all those moves where you promoted to something to always be able to take the black bishop I was led to the wrong (I think) train of thoughts. I thought the right move was to move the white knight to F6 so that if the bishop moves to E5 I simply move the knight to D7 makning the bishop move to G7 or H8, but then I saw that D4 was an option too. Oh well! That's why I'm not the one making the puzzles 🤭
That wasn’t necessarily the only way to not lose, keeping your bishop on G1 allowed it to block the black bishop if the kind moved, although it would’ve been a knight and bishop for just a bishop, you could’ve promoted to a queen. Kind of a risky trade but it works (I believe) (Edit:) I realized black would’ve promoted their pawn with mate in one, oops
Early on in the puzzle, after Bxh2, the suggested move is b7. However, what about Nf6 instead? If Be5 then Ng4 threatens bishop, and if bishop retreats on diagonal then f6. On the other hand, after Nf6 if Kd6 then Ng4 still works! Am I missing something?
No hecouldnt because after bishop takes bishop , knight takes black bishop . And The king is not gonna take the knight and the pawn gonna promote to queen and mate
At that point (12:00) in the video there is no more b pawn. But either way, if Kd2 for Black, White wins. 1...Kd2 2.Kb2 Be5+ 3.Kb3 Kxc1 4.e7 Kb1 5.e8=Q c1=Q 6.Qxe5 and White has an easy win.
@@DataMetrics Hmmm... not sure exactly which line (from the main line) you're referring to... but the goal now is to find a win for White. It's already been determined that Black can draw. We are now trying to prove otherwise. I believe this is the main line of the composition with the improved 8... Kd3. 1.Ne4+ Kd3 2.Nc5+ Kc3 3.Nb3 Be5 4.f4 Bg7 5.e8=N Bh8 6.f5 Be5 7.Bh2 Bxh2 8.b7 Kd3! 9.b8=B Bxb8 10.Nc7 Bxc7 11.Nc1+ Ke4! 12.Kb2 Bd8 So, the goal is to try to improve on any of these moves for White, and find a win.
Although I might not have been the first to mention or realize this, I personally find it odd you failed to mention a very major possibility for black at 12:00 following white knight to C1. Given the Board state at 12:01, would the best move for black not be king to D2? If white returns the knight to B3, black can move the king to D1 (or back to D3); Black bishop to E5 is still open, resulting in checkmate (albeit after a prolonging via white knight to block at D4). If white instead moves king to B2 while leaving the knight at C1, then black can still move bishop to E5. While not checkmate, the resulting state would leave black at an advantage, forcing white king to B3. Black may then pre-empt the white pawns via bishop to F6. The board state is in black’s favor.
The whole point of this is in the artistry and creativity to create a position that could allow for the unconventional theme of underpromoting every pawn.
From your requested position, the immediate Nc1+ gives white a winning advantage. If black goes for the Ke4 line, it loses by force, and if he goes for the recommended Kd2, the lines goes Kb2 .. Be5+. Kb3 .. Kxc1 then the brilliant Nc7. Following the top engine lines, both players get a queen, but if black makes a bad king move, white can force the queen trade and promote another queen to win the game. Fun analysis to look at
At 6:16 when Bh2, I don’t know why you haven’t considered this Nf6, Be5, Ng4. This knight now controls e5 and f6 squares so black has to play Bg7 or Bh8 which white can cut off by pawn to f6. Please see this line of attack for white and share your comments.
@@peteneville698 Same threat still remains even after under promoting to Bishop. Going by the solution provided in this video at 7:39 after under promoting to Bishop, black Bd4, Ba7, Bxa7. This is a winning option for black.
6:00 Nelson, i am afraid to say that you are wrong, black bishop doesnt need to capture the white bishop, it can simply go to d4 to create another mate threat, if knight takes, black pawn will promote to queen lead to mate, if knight does not capture, then black king goes d3 forcing knight to capture it, then black pawn will also promote to queen, checkmate. You might say that white bishop can go to e5,but now then bb is going to capture it and nothing can stop that. If wb goes to g1 stop bb, then bb just goes to e5(do not capture wb because now knight can go to d6 to stop the mating move by going b5 fork!) You might also say then wb are just going to chase bb because of the checkmate threat. Yeah, you are right. And now it leads to a draw, remember our goal is to make white win? well now not anymore, i have checked that there is no any move to stop bb but chasing it with wb. Hope one of you can see it and let Nelson know!
White can plays Bf4 after Bd4, protecting c1 with the bishop instead, and if black moves the king we just take the black bishop, no more pawn promotion mate.
@@CasualAzusaEnjoyertysm for answering, its mb. i wish Nelson could talk about each different case like this bishop move because it is not easy to see..
Instead of trying to promote to bishop on b after Bxh8, you should go kf6, then when bishop back to e5, kg4 attacks It, and the only way to keep the check threat going would be to Go back to f7 or h8, whickever you could block by putting a pawn on g6, protected by the Knight, which basically invalidates the bishop check. By then theres no threat and you get time to promote the pawns on b and e and get to a winning position
'you should go kf6' There is no position in the game where either of the kings can go to f6, so I assume you meant 'Nf6'. Nf6 Be5 Ng4 Bd4 (an option that you have just ignored in your analysis) If white takes with the knight on b3, then black just promotes with checkmate.
at time stamp 11:20 in that position White can play Nc1+ here. If black goes for the pawns with the king then White plays Nc7. Then Bishop takes Knight is met with pawn to e7 or king takes pawn is met with pawn b8=Q
i let stockfish run the puzzle from the starting position, and on depth 44, the mainline after Kd3 is NOT nc1+ but b8=B, bxb8, nc7, nxc7 and only then Nc1+, and white is up +2.48 after playing the top lines out from stockfish, this is a draw
The obvious bait move is to promote the queen. First you need to attack the King with Knight to E4. Black King moves to D3, White King to B2. Note, if Black King goes to D4 instead, then the same move kills the Black Pawn/Queen But that is as far as I can get.
Bei 12:00 geht der schwarze König nach d2. Bei erneutem Schach durch den Springer schwarzer König nach d1. Kein weiteres Schach möglich und egal was weiß zieht, schwarzer Läufer oder Bauer zur Dame setzt Matt.
I feel that Nc1+ then Kb2 can start an escape, if played at 11:16 INSTEAD OF promoting the B pawn. Because Nc1 is Check, it means the black king has to move, giving the white king an escape to b3 and black king has to first take the knight on c1 then move aside for the pawn to promote. That gives white 2 moves before black has a queen, and I feel like it can be done, but I don't see how.
At 6:15, why doesn't Nf6 work? If black responds Be5, you have Ng4 and now you're got the diagonal covered. Just promote either the b or e pawn and win.
In the last example instead of the black king going for the pawns, why doesn't he go for d2 instead? This would put pressure on the knight? The white king MUST move to b2 or get checkmated as moving the e pawn would be too slow. After the check the king would have to move out of the way to b2. Next the bishop can move to F6 blocking the pawns advances. Not sure after this though.
I think adding a white pawn in the right place would correct the flaw but I do not think black is out of tricks around 10:17. What if black plays bishop to d4 instead of moving the king? White knight cannot take it because checkmate next move; white rook could continue harassing it indefinitely but I do not see a way to force the black bishop away from checkmate threat squares d4, e5, f6.
4:39 I think white can promote to a queen because after black king moves comes bishop d4. If bishop takes knight takes king takes king b2 black king wont be able to save pawn in time because of white queen. Where have I missseen it?
6:01 what if black plays Bd4 instead of taking the bishop? if white takes it with the knight, c1 promoting to a queen is checkmate. if white plays Be5 black would simply take it and theres no way to avoid the discovered check and checkmate. this looks like a winning move for black, so what exactly am i missing?
Knight to c1 is correct - leads to a draw, and is the best option for white. King to b2 loses after Be5+ that forces white to either sacrifice the knight and let black promote, or to move the king to c1.
One question - when white moves the pawn to E8 and promotes to Bishop, couldn't you just move the black bishop to d4? If he moves his bishop to threaten again, you take, and he can no longer block with his knight. If he captures with the knight, you promote black pawn to queen and it's checkmate.
I'm probably missing something but at 7:40, if black moves the bishop to d4 they win, because when the knight takes the pawn will become a queen and they win.
Extremely easy puzzle initially, I saw the sequence immediately. I normally need to think with puzzles. Although the knight promotion was tricky, then it got not so clear. Underpromotions galore. Good stuff.
10:57 Well, this is still a winning position for white with the following moves : -White needs to play the only move Kc1+ -The black king goes to d2 -White plays the move Kb2 -So black checks white with Be5+ -The white king moves to b3 -Black takes the knight on c1 -White plays the brilliant move Nc7 -The black bishop has to take it -White plays e7 *This last move forces promotion, the black pawn will still promote too but this is not enough to stop white's avantage*
At 6:10 what's wrong with Nf6? On Be5 we continue with Ng4 forcing bishop to retreat. If black decide to leave bishop on main diagonal (only two unattacked cells towards the corner), we trap it there by f6.
12:25 its not a 100% guaranteed draw because the two left white pawns can win it by working together with the King to keep them in play, bishop attack will be trapped once the king is there to catch him. White wins, whether its black king to D3 or other. 😁
At 4:40, what if white plays bishop to D4? It forks the king and the bishop and is defended by the knight. Black can exchange the bishop for the white bishop+knight but at that point black has no more material and white can freely promote multiple queens. If black moves the king instead of the bishop then he loses the bishop for no gain and the game is over even sooner. I'm sure I'm missing something or Nelson would have called this out, but what is it?
'what if white plays bishop to D4?' Blunders white bishop. 'Black can exchange the bishop for the white bishop+knight but at that point black has no more material and white can freely promote multiple queens' Black doesn't take the knight. Black promotes with checkmate. White can't do anything after that.
You're wrong! At 8:03 bd4 just wins for black! Edit: this actually draws because white goes A7 as response, so back and forth. Same thing on 5:51 Edit 2: ok I see now that if black has the bishop on d4, white responds with Bf4, defusing the promotion, and allowing to capture d4 with the knight. Anyway, I really think this line should have been explained though :) Great study!
What if we move Kf6 instead of b7 and later on position our Knight to g4 to stop the Bishop from the diagonal and finally move f6 to trap if Bishop still wants to stay in a1-h8 diagonal or trade it with one of our Bishop?! Like 1. Kf6 Be5 2.Kg4 . Does black has still tricks i cant see for this? (timer : 6:11 of video)
sir black cannot even make draw in the "drawn position as we saw" if we add just 1white passedpawn as part of composition (maybe on h6 or in a6) and therefore the puzzle is still works!
@@Rocky64 That's only for the "cooked" version. With the corrected version placing a WP on c4 you no longer have the rook check on c6. How do you beat black's Bd4 then?
@@peteneville698 It's more complicated with a WP on c4, but it's still a win for White according to Stockfish analysis. 13.Re6 Bd4 14.Re1 stops the promotion (14...Kd3+ 15.Nxd4). Black can threaten M3 with e.g. 14...Bf6, but White can afford to sac the rook with 15.Rb1!, e.g. 15...cxb1=Q+ 16.Kxb1 Kxc4 tablebase win, or 15...Kxc4+ 16.Rb2 - White is a rook up unless Black plays ...Bxb2+ Kxb2 which simplifies to an easy ending for White.
Correct me if I am wrong. But after the first bishop sacrifice you move knight to F6 instead of pawn to B7, then next move, move knight to G4, after, it controls check mate threat, and if king moves for it, push D pawn, or take threatening queen pawn with king, it shouldn't be a stalemate situation You keep queen threat in check with first knight, mate threat from king moving is blocked by knight for at least 2 moves, enough for the rook and you still have an easy queen at both B and E and a close one for F That or I'm just blanking an obvious reason not to
'But after the first bishop sacrifice you move knight to F6 instead of pawn to B7, then next move, move knight to G4, after, it controls check mate threat' Nf6 Be5 Ng4 Bd4 White has no good followup, and black is going to checkmate white shortly thereafter.
at 4:38, couldn't you play bishop D4? then black bishop takes, horse takes, king takes, and white king moves to B2? Finally finishing by moving the other pawns up?
12:22 Is there really no way to win with 2 pawns and a knight vs 1 bishop? I feel like there's gotta be way to slowly move those pawns up with the knight and king guarding them. Just keep the king and knight on white spaces and guard the pawn when it's on black. Wish you played that part out so show how it's a guaranteed draw.
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
It's known that this study was originally unsound (Black could force a draw), but it's been fixed by the composer. The published correction is to add a white pawn on c4. Then at 11:58, 11.Nc1+ does win because the extra passed pawn makes all the difference, e.g. 11...Ke4 12.Kb2 Bd8 13.Kxc2 Kxf5 14.Kb3 Kxe6 tablebase win. The main variation with all the underpromotions is not affected.
That's SO sexy!
Oooh that's awesome!
@Rocky64 : I was going to post these infos but found out you had already beat me to it ;).
Also the study stops after 12.e8=R! but Liburkin gave the continuation 12...Bg7 Re6 as an example (there are other moves which win, any move attacking the bishop but they're just losses of time ultimately as white does have to go through this continuation with the key move Rb1! when the pawn is on c4) :
13.Be6 Bd4 14.Re1 (Rd4 or Rd6 are again winning but just losing time) Bf6 15.Rb1! (15.Re6 just loses time again) Kd3+ 16.Rb2 and the ending is won (Liburkin still gives more moves, but they're no longer forced even though the idea stays the same: 16...Ke2 17.c5 Kd118.a4! (only move) c1Q+ 19.Nxc1 Kxc1 20.a3 Bxb2+ 21.Ka2 and the pawns are unstoppable (white could also have played for instance 17.a4, 18.a3 and 20.a5 or 20.Ka2 instead with still a won endgame).
Also to be noted that black can't try to go to a3 with their king to attempt to exploit the pin and try to mate while taking some of the pawns : after 16.Rb2 Kxc4 17.a4 Kb4, there is 18.Nd4+! which unpins the rook with an easy win (same thing after 16.Rb1 Kxc4+ 17.Rb2 Kb5 18.Nd4+!)
To finish, it migth be worth mentionning that 8.b7 is forced because after white gave their bishop, black now has gained access to the d4 square as an extra square on the long diagonal to threaten mate. So 8.Nf6? would allow 8...Be5 9.Nd7 Bd4! (not Bg7 or Bh8 10.f6!) 10.Nxd4 c1=Q#
Edit : last thing, in the version without the pawn c4 that you showed, 8...Kd3 is indeed a cook, but the best attempt for white would be to keep their b pawn and their d8 knight and to play immediately 9.Nc1+. Then the following contiuation is forced : 9...Kd2! 10.Kb2 Be5+ 11.Kb3 Kxc1 12.Nc7!? Kb1! 13.b8Q c1Q 14.Ka4+ Ka1! and the c7 knight is lost and with queens on board, the white passed pawns don't compensate enough for the bishop to grant a win.
Like how many puzzles mentioned here is going to have a flaw until it gets fixed because of missing a pawn or piece? Feels like two in a row.
@@emphyriohazzl1510 Thanks for the info!
The underpromotions are so satisfying lol but sadly that one black king move makes it a draw. It would be cool if white really wins the game cuz it's like an entire army is trying to stop a dangerous pawn and an assassin bishop😄
Because of this puzzle, I just remember an another chess puzzle that I saved in my files that has a similar situation to this one.
The setup is:
⬜[WHITE]⬜
King -> a3
Rook -> f7
Bishop -> f1 and g1
Pawn -> b2, b7, d4, f6, and h7
⬛[BLACK]⬛
King -> a5
Bishop -> b8
Pawn -> a4 and b3
It is white to play and win. Idk who composed that puzzle. It is just a puzzle I found on a FB page
This position is mate in 35
@@keymasta3260 Thanks I will test my grandma Frances
Just add more white pawns or have them better placed
@@keymasta3260 how? I tried it vs stockfish it's not win, it's draw
@@rasulrahimov744 Just add a pawn on c4.
Wow amazing puzzle! I was screaming at my screen when he said that promoting to a queen was wrong and then I was left speechless when I saw the stalemate. Also the overall idea of having to promote 3 times into everything but a queen made this puzzle next level. Not even a hardcore chess fan but that was amazing.
Impressive that you had the intuition to know getting the queen was incorrect. I was thinking “if getting the queen is wrong then I’m okay being wrong.” After seeing the stalemate, I was not okay being wrong
5:53 Not sure why you didn’t mention that Black can play Bd4 here (If Nxd4, then c1=Q#). I think White’s only move then is Bf4 to defend c1 with a 2nd piece.
Nice spot, but it seems to be easily countered since black seems to be out of moves after white moves Bf4.
I think this option may have been cut from discussion to save on the length of the video.
@@ryanpaulmarcoux3813 then still white could move back Bg1 and and if black takes it's no more attacking that diagonal, and if not then bishop with take it on d4
@THE LEGENDERIAN It's Black's turn after white goes to Bf4.
Black would not want to play Bd4, in the first place, since after white goes Bf4 there is no good answer from Black.
Yeah thats what I was thinking as well, if Bd4 then white can return back to Bg1 and repeat moves.
If white go bg1 then black can take it from bd4 and come back to d4, so it can escape b8 diagonal ..isn't it?
Now people can understand that less pieces on the board does not mean it’s necessarily simple. Sometimes they are more complicated than it looks on the surface.
@Nelson Lopez
I think I have a solution:
At 6:06
After black bishop takes white bishop, white has to play N f6, instead of P b7.
(No need to go for premature promotions to bishop and rook)
Then, if black plays B e5, white has to play N g4.
Then if black plays B g7 or h8,
White can block the black bishop by playing P f6.
White wins subsequently.
I request you to analyse further
Nf6 Be5
Ng4 Bd4
If white takes with the knight on b3, then black promotes with checkmate.
Nf6 is not a winning move.
When white plays N g4, black can play B d4. If white knight gets the black bishop, the black pawn will become queen and black will win. Otherwise, any other moves from white would lead to black king to d3 and win
Nelson, I'm very glad you enjoyed it and thought it interesting enough to present to your viewers. Cooked or not, I agree, it's a wonderful composition and you did a great job presenting it.
too bad its a draw, even with the c4 pawn added in a later iteration from liburkin
@@synka5922 Actually, with the fix it's a win for White, as was intended.
@@MrEdwardCollins after playing it a few times I found the win, but its extremely different and involves sac'ing the rook
It turns to a normal endgame in fact
I put the final position on SF when Black plays the correct Kd3 instead of Be5 and the brilliant underpromotions following that line. SF found a way for Black to hold and draw but it's a little crazy. White's best move would be 1. Nc1+ which Black responds with 1...Kd2. Line goes on with 2. Kb2 (and not 2. Nb3??, Kd1 and white is losing as Be5+ cannot be avoided), 2...Be5+ 3. Kb3, Kxc1 4. Nc7!, Kb1! (Both 4...Kd1 and 4...Bxc7 actually loses according to SF, I won't go into detail) 5. b8 = Q, c1 = Q 6. Ka4+, Ka1 and Black holds.
Yeah, this line indeed. It gives White winning chances but it isn't actually winning.
Yes just found this with SF so I am not the only one ;)
at 11:00 Nc2+ Ke4 Nf6+ Kf5 Nd7 and after the promotion white wins with the extra knight and 2 pawnes
if at 11:00 Nc2+ Kd2 Kb4 Be5+ Kb3 Kc1 Nc7! if bishop takes then e7 or even if he allows promotion on b8 , in both cases both sides get queens which get traded and the position is winning.
Neither of the knights can go to c2 from that position.
Nc1 Kd2 line is also a draw, not a win for white. Neither of the kings can go to b4, either, from where they are. And queens do not get traded under optimal play.
at 11:00: if the king moves on d3 right here, it doesn't look like you need to sacrifice b7 or e8. you can just Kc1.
at 6:00 : can you explain to me why black can't ignore the bishop gift and simply do Bd4 ? I don't see any move white can do to block black from looping Bd4 - Be5
I was thinking the same
For 6:00, after Bd4, I think white can play Bf4, replacing white knight's job to protect c1 square. So, If black move the king and check with black bishop, white can simply take that bishop with knight without worrying c1 square. Correct me if I wrong
@@maylene1945 indeed, didn't see that line, thx
1st point that is the best move but still it leads to a draw
2nd point after Bd4 theres a good move Bf4 after black does Bxb6 and white does e7 its checkmate in a view turns
12:47 I looked around and if king moves away to set up bishop checkmate then you do have forced win with Nc1+ and Kb2 and you escape checkmate threat and sac both knight and push to e7 then both will have queen then you forcefully trade queens and win by sacing one pawn and make queen with other and win.
(if black under promotes to knight then queen vs knight and bishop endgame is winning)
Great puzzle though
It's been a minute since the last Mark Liburkin puzzle...😁😁
I can't get enough of puzzles where you can't queen a pawn because the octo-directional nature of queen moves can cut off so many potential escape squares for the enemy king and create stalemate positions. I felt like the easiest moves to figure out were Ne4+, b8(B) and e8(R), the latter 2 due to what I just mentioned in terms of queening a pawn leading to stalemate.
The ad appeared on my screen is litterally Rise of Kingdoms💀
That ad seems to be showing up a lot lately.
Bro
Just get YT premium
@@Illuminex_XD paid Adblock? No thank you
@@chickennugget993 Your problem I guess
@@Illuminex_XD it’s not, because I have free Adblock kid
Quick question @ChessVibes,
After the black Bishop moves after you play f3, what would happen if you play Bd3 check?
At 5:50, what's to stop Black from moving Bd4 instead of Bxh2 and forcing a draw by repetition just shuffling the bishop between d4 and e5?
After Bd4, Bf4 adds a second guard to the queening square, and black has no more tactics.
Thanks! @@antarath517
I quit chess a long time ago but there's just something about this channel that makes me wanna watch it even if I don't play chess anymore lol.
There is a class of chess players called solvers that take composed studies and solve the (or “cook” them, if they are flawed). Might be worth checking into…
It's a beautiful game whether you want to be a watcher, a player, a problem solver, or whatever.
Between the geometry and the logic and the complexity with so few pieces and a small board size, I find it irresistable.
The study 8/3PP3/8/P6p/b6p/6kP/2P2p2/5B1K by Ernest Pogosyants also features underpromotions to knight, bishop, and rook (unless IT'S flawed, too ...)
via: Andy Soltis, Chess To Enjoy
1. Nc1+, Ke4 2. Kb2, Kf5 3. Ng7+ Kf3 4. e7 Ke7 5. Nf5+ and from that point you can maneuver around into a check mate, if at any time that bishop leaves to check the king you just take the pawn and with two knights you can walk your pawns up the side. It’s a win for white.
Edit: I’ve played it out 5 different ways and white always wins if they don’t blunder
But why would black play Ke4? Kd2 would be better.
@@RJSRdg because now I get to run my pawns up the board without opposition
Kd2 draws for black after Nc1+. The line goes 2. Kb2 Be5+ 3. Kb3 Kxc1 4. Nc7 Kb1 5. b8=Q c1=Q 6. Ka4+ Ka1. 7. Regardless of what white plays here there is perpetual check
I have a question. At 5:45 why couldn't you just move the bishop to d4 forcing it to be taken by the black bishop and then take it by the white knight? I'm still learning the intricates of chess so some advice would be helpful!
After knight takes, black promotes with checkmate
@@thetaomegatheta Good call. I didn't see that. It should definitely have been mentioned in the analysis though.
@@Paul-sj5dbno it shouldn’t
After Bf4, black don't have any good moves
Been playing recreationally for 15+ years. I caught the first under promotion but the other two blew my mind. So many tricks with this one that I could not keep up. I know I’m no master but after this puzzle I’m super humbled and am laughing at myself for how tough this was. Excellent vid.
7:38
Yesterday your puzzle featured every what if which led to every different promotion type possible.
Hi, one interesting (I think) line: when we play BH2 (5:56 in video), back doesn't capture it, but plays BD4 - Threaten king move and chekcmate. Knight can't take, then C1 checkmate with pawm promotion. If BG1 happens, there are no tricks with the B pawn.
Great puzzle - the "flaw" somehow makes it even more beautiful.
Unlike some other "flawed" puzzles shown on this channel, this one is easily fixable by just adding a white pawn on, say, h3.
@@liamsun2543 How does that extra pawn change anything?
The flaw is that 7:15
Is by technicality a stalemate merely because black can't move without checkmating themselves when by all means they should lose
At 11:00 if you move Nc1 check, then it opens up some options. If he moves the king back, then you can do the b8 move. If he moves Kd2, then it gets complicated.
It allows white king to escape and both sides can eventually get their queens back. White by doing Nd6, then e7, e8. This after Kb3 and white loses the knight on c1. I didn't fully play it out after that, so black may have a perpetual check with eventual mate.
You didn't even consider black's moves
B8 doesn't do anything as the bishop can just ignore it and go straight for the checkmate
In the end, the line
Nc1+ Kd2
Is a draw. It is also the best outcome for white from the position at 11:00
Fun fact: Black won this game because white kept pausing to think about it and lost on time
Chess Vibe ♥️
6:11 i cant play for black that well, but does knight to f6, bishop to e5, knight to d7 work? Its a turn before your challenge though, but it blocks/stops the bishop from being active and lets you push the pawn on e6 forward.
'but does knight to f6, bishop to e5, knight to d7 work'
No. Black bishop just goes to d4.
@@thetaomegatheta had a feeling it wouldn’t, just forgot the other knight couldnt help
I've seen this puzzle before but I think white has a pawn on g2. That pawn is important for white to win a resulting queen and pawn endgame after Nc1+ Kd2 (Ke4 obviously loses in this version). For the version in the video, black can hold the endgame.
...Kd3 was pretty unfortunate, and pretty clever too. The point is that Black wastes a move with ...Be5 and ...Bxb8 which is 2 moves, so Black plays ...Kd3 first and Black directly takes ...Bxb8 from h2, which is also 2 moves, except Black plonked in an extra ...Kd3. Still, phenomenal study! This small king move doesn't make the study less beautiful! And I'm happy to report I got all the answers right when Nelson asked to pause the video (including the underpromotions!) Thanks for the amazing video Nelson!
12:54
Why is Kb2 not an option here?
it results in a win for black, black plays bishop back to e5, then according to SF white can't defend
So once white moves its bishop to h2 @ 5:56 what is to stop black from bd4? White can't take with the knight because it is busy guarding c1? All white can do is move its bishop back to g1, and black can perpetual to stalemate? Remember that when the puzzle says white to play and win, all black has to do is force a draw to ruin the puzzle.
Those 3 under-promotions from the pawn to stop a stalement when you take the bishop, this puzzle was truly adequate
5:53 what if black moves the bishop to D4 isn’t that mate? Because if white moves there bishop to E5 you take and still have mate and if white takes with the horse you promote the pawn and it’s mate. Or am I forgetting something?
White goes Bf4, freeing up the knight to take on d4.
Under-promotion to knight itself is very, very rare. Under-promotion to rook and bishop is something which I have seen for the first time in my life.
Under promotion to rook is for less slatemates
6:00 why would black NOT play ...Bd4 to stay on diagonal. White's knight on b3 can't capture because it's needed to guard c1 from ...c1=Q#. Right?
Almost.
White goes Bf4 to prevent promotion.
This was a fantastic analysis. Totally enjoyed it, thanks for sharing.
At 6:15 is knight f6 not viable? To then move G4 to prevent rhe bishop checkmate?
Very cool setup. Wow! What if in the beginning position you have an extra white pawn on e2? It never moves but would remove the option of d3 for the black king at the end of the game. I haven't fully analyzed the situation. But perhaps it would be an elegant solution to the imperfection of the setup.
Honestly the white pawn can be in a lot of squares and it probably counters Kd3, because the line after Kd3 is simply a positional variation rather than a tactical one.
at 5:15 what's wrong with g1 to d4? Wasn't even considered
Bd4+ Bxd4
If white takes with knight Nxd4, then black promotes with checkmate - c1=Q#
@6:29 You covered pawn moves, but what about Nf6 with Ng4 idea? You're just going to advance to f6 if black tries Be5 -> Bg7/Bh8
EXCEPT Bd4. The knight can't take the bishop and there's no other defense.
A significant omission in the analysis, I think.
You gave yourself the answer why this doesn't work. Sometimes he miss ideas people could have, but i think it would be to much work and a to long video to cover every single move.
@@lenalittle4193 I agree with respect to "similar ideas" like all the different pawn moves. I just felt that this particular variation was an exception to the same idea that he illustrated before the bishop deflection to h2 and worth a call out that it would not work. And in comments, a large number of viewers also noted that idea and wanted to explore it.
Nelson does a great job with these and I don't think constructive criticism diminishes his work. He's even made videos correcting himself when he feels the gap is egregious enough and I respect him for doing that.
That's why I made the comment. To give him the choice :)
@6:30 why isn't Nf6 considered?
if Be5, we simply go Ng4, attacking the bishop again as per usual.
Also defending D4 and F6, so if the bishop goes g7 or h8, we can still block with the pawn on f6.
I'm not really a chess player, so I'm unable to see what black can do to prevent this.
He can't move the king first to set up the checkmate, as our knight then gets to g4 and attacking the bishop already on h2, while also defending the important e5 square.
what am I missing?
never mind, noticed black just goes D4 to get our Knight on b3 out and we can't defend both C4 and D3 in a safe manner.
What about bishop d4
Brilliant idea I thought that too
Bf4! to cover the promotion square.
@Masterpiece Not sure if you got a notification from my first reply so replying to you so you can see it.
@@FustinJieldsok
That doesnt work here
Intricate!
At 6:07 instead of b7 white plays Nf6. If Be5 then Ng4 followed by f6 unless of course black plays Bd4. But then at least somebody wins!
If black goes Bd4, white seems to be out of good options.
Hey, Mr. Vibes (I was going to nickname you CV, but that sounds too much like work). Just a quick thank you, and I am sure I am not alone in that sentiment. I have some issues with anxiety and depression that can occasionally get pretty severe. Staring at puzzles with you and the other subscribers on your channel helps me get through the bad days, so again, thanks. Good things happen in ways we don't always expect, keep it up.
Cheer up. It's not all so bad. Did you try to go to church?
@@НиколайВалерьевич-ъ8зmaybe hes not Christian?
I let Stockfish 15.1 run this study for few minutes up to a depth of 65 and it considers it a draw so I believe there is nothing to do.
What about Kf6 instead of the second bishop? That should give time to jump to Kd7 in time for the next check
No, because black can play Be5+ straight away.
@@RJSRdg Not in the original variant where the black king is in the way of the check!
Was thinking about that also
At 12:01 can’t black win king d2 then Knight to b3 check then king to d1 white is out of checks. If white knight d4 promote pawn if king runs b2 then bishop e5 check knight d4 bishop d4 king b3 black promotes pawn and wins
Nb3 is a bad move because then black wins. White wins with Kb2
After all those moves where you promoted to something to always be able to take the black bishop I was led to the wrong (I think) train of thoughts. I thought the right move was to move the white knight to F6 so that if the bishop moves to E5 I simply move the knight to D7 makning the bishop move to G7 or H8, but then I saw that D4 was an option too. Oh well! That's why I'm not the one making the puzzles 🤭
That wasn’t necessarily the only way to not lose, keeping your bishop on G1 allowed it to block the black bishop if the kind moved, although it would’ve been a knight and bishop for just a bishop, you could’ve promoted to a queen. Kind of a risky trade but it works (I believe)
(Edit:) I realized black would’ve promoted their pawn with mate in one, oops
f5 is not an only move Nd6 makes it so that the king cant move and you can just promote one of your pawns with no worries
Black king can still go to d3, so Nd6 is not working here
Nd6 is mate in 3 ? lol
Early on in the puzzle, after Bxh2, the suggested move is b7. However, what about Nf6 instead? If Be5 then Ng4 threatens bishop, and if bishop retreats on diagonal then f6. On the other hand, after Nf6 if Kd6 then Ng4 still works! Am I missing something?
If Be5 and Ng4, black plays Bd4 and you can't stop mate
You could've put bishop to d4
No hecouldnt because after bishop takes bishop , knight takes black bishop . And The king is not gonna take the knight and the pawn gonna promote to queen and mate
12:00 what is the problem in kd2 for black? isn't it a draw or win for black since the bishop is guarding the b pawn?
At that point (12:00) in the video there is no more b pawn. But either way, if Kd2 for Black, White wins. 1...Kd2 2.Kb2 Be5+ 3.Kb3 Kxc1 4.e7 Kb1 5.e8=Q c1=Q 6.Qxe5 and White has an easy win.
@@MrEdwardCollins What if instead: 1...Kd2 2.Kb2 Be5+ 3.Kb3 Bf6? Stops e7 while maintaining pressure on the knight on c1.
@@DataMetrics Hmmm... not sure exactly which line (from the main line) you're referring to... but the goal now is to find a win for White. It's already been determined that Black can draw. We are now trying to prove otherwise.
I believe this is the main line of the composition with the improved 8... Kd3.
1.Ne4+ Kd3 2.Nc5+ Kc3 3.Nb3 Be5 4.f4 Bg7 5.e8=N Bh8 6.f5 Be5 7.Bh2 Bxh2 8.b7 Kd3! 9.b8=B Bxb8 10.Nc7 Bxc7 11.Nc1+ Ke4! 12.Kb2 Bd8
So, the goal is to try to improve on any of these moves for White, and find a win.
Holy crap Batman, that was a tricky one.
Batman's reply is simply "Holy crap, Robin!".
Although I might not have been the first to mention or realize this, I personally find it odd you failed to mention a very major possibility for black at 12:00 following white knight to C1.
Given the Board state at 12:01, would the best move for black not be king to D2? If white returns the knight to B3, black can move the king to D1 (or back to D3); Black bishop to E5 is still open, resulting in checkmate (albeit after a prolonging via white knight to block at D4). If white instead moves king to B2 while leaving the knight at C1, then black can still move bishop to E5. While not checkmate, the resulting state would leave black at an advantage, forcing white king to B3. Black may then pre-empt the white pawns via bishop to F6. The board state is in black’s favor.
Please remember that a game, perhaps the first one known with pawn underpromotion to bishop is Schallopp-Schottländer, Hamburg, 1885.
The whole point of this is in the artistry and creativity to create a position that could allow for the unconventional theme of underpromoting every pawn.
From your requested position, the immediate Nc1+ gives white a winning advantage. If black goes for the Ke4 line, it loses by force, and if he goes for the recommended Kd2, the lines goes Kb2 .. Be5+. Kb3 .. Kxc1 then the brilliant Nc7.
Following the top engine lines, both players get a queen, but if black makes a bad king move, white can force the queen trade and promote another queen to win the game. Fun analysis to look at
It ends with a draw, because white have no good checks when blacks king is on a1
At 6:16 when Bh2, I don’t know why you haven’t considered this Nf6, Be5, Ng4. This knight now controls e5 and f6 squares so black has to play Bg7 or Bh8 which white can cut off by pawn to f6. Please see this line of attack for white and share your comments.
This line is simple and doesn’t need any other under promotions
What about black's Bd4?
@@peteneville698 Same threat still remains even after under promoting to Bishop. Going by the solution provided in this video at 7:39 after under promoting to Bishop, black Bd4, Ba7, Bxa7. This is a winning option for black.
you take with the other knight@@peteneville698
The same thing I was wondering
Hi @Chess Vibes, after f4 at 3:49:
- Black can go c1+ -> Queen (check)
- White goes Nxc1
- Black can go Kc2+ (checkmate by Bishop at e5).
Am I right?
No, ...Kc2+ fxe5.
@@Rocky64 ah, I see. Thanks
6:00 Nelson, i am afraid to say that you are wrong, black bishop doesnt need to capture the white bishop, it can simply go to d4 to create another mate threat, if knight takes, black pawn will promote to queen lead to mate, if knight does not capture, then black king goes d3 forcing knight to capture it, then black pawn will also promote to queen, checkmate.
You might say that white bishop can go to e5,but now then bb is going to capture it and nothing can stop that. If wb goes to g1 stop bb, then bb just goes to e5(do not capture wb because now knight can go to d6 to stop the mating move by going b5 fork!)
You might also say then wb are just going to chase bb because of the checkmate threat. Yeah, you are right. And now it leads to a draw, remember our goal is to make white win? well now not anymore, i have checked that there is no any move to stop bb but chasing it with wb. Hope one of you can see it and let Nelson know!
White can plays Bf4 after Bd4, protecting c1 with the bishop instead, and if black moves the king we just take the black bishop, no more pawn promotion mate.
@@CasualAzusaEnjoyertysm for answering, its mb. i wish Nelson could talk about each different case like this bishop move because it is not easy to see..
6:53 what is with knight blocks the attack, bishop takes, queen blocks the attack and moves to b2?
Then the pawn will promote to a queen or rook and the white queen can't capture because it is pinned - so checkmate
If knight blocks bishop's attack, then it stops guarding c1, so black promotes to queen or rook with checkmate
Instead of trying to promote to bishop on b after Bxh8, you should go kf6, then when bishop back to e5, kg4 attacks It, and the only way to keep the check threat going would be to Go back to f7 or h8, whickever you could block by putting a pawn on g6, protected by the Knight, which basically invalidates the bishop check. By then theres no threat and you get time to promote the pawns on b and e and get to a winning position
'you should go kf6'
There is no position in the game where either of the kings can go to f6, so I assume you meant 'Nf6'.
Nf6 Be5
Ng4 Bd4 (an option that you have just ignored in your analysis)
If white takes with the knight on b3, then black just promotes with checkmate.
at time stamp 11:20 in that position White can play Nc1+ here. If black goes for the pawns with the king then White plays Nc7. Then Bishop takes Knight is met with pawn to e7 or king takes pawn is met with pawn b8=Q
Then Kd2 and it's a tie
i let stockfish run the puzzle from the starting position, and on depth 44, the mainline after Kd3 is NOT nc1+ but b8=B, bxb8, nc7, nxc7 and only then Nc1+, and white is up +2.48
after playing the top lines out from stockfish, this is a draw
5:50 What about after bh2 black plays bd4 black wins right or am I dumb
At 6:03. Why do black Bxh2? Isn't Bd4 just forcing Draw? What am I missing?
...Bd4, Bf4 stops promotion and frees the WN to attack the BB.
The obvious bait move is to promote the queen. First you need to attack the King with Knight to E4. Black King moves to D3, White King to B2.
Note, if Black King goes to D4 instead, then the same move kills the Black Pawn/Queen
But that is as far as I can get.
Bei 12:00 geht der schwarze König nach d2. Bei erneutem Schach durch den Springer schwarzer König nach d1. Kein weiteres Schach möglich und egal was weiß zieht, schwarzer Läufer oder Bauer zur Dame setzt Matt.
I feel that Nc1+ then Kb2 can start an escape, if played at 11:16 INSTEAD OF promoting the B pawn. Because Nc1 is Check, it means the black king has to move, giving the white king an escape to b3 and black king has to first take the knight on c1 then move aside for the pawn to promote. That gives white 2 moves before black has a queen, and I feel like it can be done, but I don't see how.
It leads to draw after Kd2
At 6:15, why doesn't Nf6 work? If black responds Be5, you have Ng4 and now you're got the diagonal covered. Just promote either the b or e pawn and win.
Nf6? Be5, Ng4 Bd4, Nxd4 c1=Q mate.
@@AnOn-gg4ei Ah yes, the knight is overloaded. Thank you.
In the last example instead of the black king going for the pawns, why doesn't he go for d2 instead? This would put pressure on the knight? The white king MUST move to b2 or get checkmated as moving the e pawn would be too slow. After the check the king would have to move out of the way to b2. Next the bishop can move to F6 blocking the pawns advances. Not sure after this though.
I think adding a white pawn in the right place would correct the flaw but I do not think black is out of tricks around 10:17. What if black plays bishop to d4 instead of moving the king? White knight cannot take it because checkmate next move; white rook could continue harassing it indefinitely but I do not see a way to force the black bishop away from checkmate threat squares d4, e5, f6.
Rc6+
4:09 why can’t the biship take the pawn on F4 then move right back to E5??
If bishop take pawn then get a queen
@@radzizhassan5451how?
How is the 2 pawns and knight for white and bishop for black a draw 12:21
4:39 I think white can promote to a queen because after black king moves comes bishop d4. If bishop takes knight takes king takes king b2 black king wont be able to save pawn in time because of white queen. Where have I missseen it?
Don't forget the white knight is needed on b3 to stop ...c1=Q mate.
@@Rocky64 Right, sorry. It seems obvious ye
6:01 what if black plays Bd4 instead of taking the bishop? if white takes it with the knight, c1 promoting to a queen is checkmate. if white plays Be5 black would simply take it and theres no way to avoid the discovered check and checkmate. this looks like a winning move for black, so what exactly am i missing?
nvm i just saw it white plays Bf4
So I've played out this setup using SF, and it seems that if white plays to perfection, it changes to a draw of repetition if black goes Kd3 at 11:02.
13:09 what if king to B2 or knight to C1 with check the black king first before get checked by black bishop and avoid some threat simple checkmate
Knight to c1 is correct - leads to a draw, and is the best option for white.
King to b2 loses after Be5+ that forces white to either sacrifice the knight and let black promote, or to move the king to c1.
what about king b2, then c1, then knight d2? Doesn't this escape the trap? Please review
One question - when white moves the pawn to E8 and promotes to Bishop, couldn't you just move the black bishop to d4? If he moves his bishop to threaten again, you take, and he can no longer block with his knight. If he captures with the knight, you promote black pawn to queen and it's checkmate.
I'm probably missing something but at 7:40, if black moves the bishop to d4 they win, because when the knight takes the pawn will become a queen and they win.
White responds with Bf4 and unshackles the knight on b3
Extremely easy puzzle initially, I saw the sequence immediately. I normally need to think with puzzles. Although the knight promotion was tricky, then it got not so clear.
Underpromotions galore. Good stuff.
10:57 Well, this is still a winning position for white with the following moves :
-White needs to play the only move Kc1+
-The black king goes to d2
-White plays the move Kb2
-So black checks white with Be5+
-The white king moves to b3
-Black takes the knight on c1
-White plays the brilliant move Nc7
-The black bishop has to take it
-White plays e7
*This last move forces promotion, the black pawn will still promote too but this is not enough to stop white's avantage*
'-White plays the brilliant move Kc7'
Nc7
'-The black bishop has to take it'
No, it does not. Engine considers Kb1 to lead to a draw.
At 6:10 what's wrong with Nf6? On Be5 we continue with Ng4 forcing bishop to retreat. If black decide to leave bishop on main diagonal (only two unattacked cells towards the corner), we trap it there by f6.
'On Be5 we continue with Ng4 forcing bishop to retreat'
Bd4 neutralises the threat.
@@thetaomegatheta Oh, I forgot that Knight on b3 serves an important mission 🤦♂
12:25 its not a 100% guaranteed draw because the two left white pawns can win it by working together with the King to keep them in play, bishop attack will be trapped once the king is there to catch him. White wins, whether its black king to D3 or other. 😁
At 4:40, what if white plays bishop to D4? It forks the king and the bishop and is defended by the knight. Black can exchange the bishop for the white bishop+knight but at that point black has no more material and white can freely promote multiple queens. If black moves the king instead of the bishop then he loses the bishop for no gain and the game is over even sooner. I'm sure I'm missing something or Nelson would have called this out, but what is it?
'what if white plays bishop to D4?'
Blunders white bishop.
'Black can exchange the bishop for the white bishop+knight but at that point black has no more material and white can freely promote multiple queens'
Black doesn't take the knight. Black promotes with checkmate. White can't do anything after that.
@@thetaomegatheta ...Oh. Duh. Thanks, not sure why that didn't occur to me. How embarrassing. :/
6:05 Bishop To D4 Knight Is Blocking Also Worked, Forces Bishop Trade
In case of a bishop trade, black promotes with a checkmate
You're wrong!
At 8:03 bd4 just wins for black!
Edit: this actually draws because white goes A7 as response, so back and forth.
Same thing on 5:51
Edit 2: ok I see now that if black has the bishop on d4, white responds with Bf4, defusing the promotion, and allowing to capture d4 with the knight.
Anyway, I really think this line should have been explained though :)
Great study!
Once the pawn on f2 moves up, bishop can block check on d4. King cant take bc of night. Forces the bishop off the file. White can push pawns
Blunders the white bishop.
Black takes with their bishop. Knight can't take, as that means black promotes with checkmate.
6:37 king to Kd3 instead of Be5
First thought: "White wins easily."
*Sees pawn direction* "White is fucked."
*Watches video* "It's actually just a draw."
At 5:50 black wins with the move bd4 because if knight takes you promote and win and if white be5 then you take and white can’t stop mate
...Bd4 loses to Bf4, when the WB covers the promotion square and releases the WN to attack the BB.
What if we move Kf6 instead of b7 and later on position our Knight to g4 to stop the Bishop from the diagonal and finally move f6 to trap if Bishop still wants to stay in a1-h8 diagonal or trade it with one of our Bishop?! Like 1. Kf6 Be5 2.Kg4 . Does black has still tricks i cant see for this? (timer : 6:11 of video)
Bishop goes to d4 and it's over for white
sir black cannot even make draw in the "drawn position as we saw" if we add just 1white passedpawn as part of composition (maybe on h6 or in a6) and therefore the puzzle is still works!
10:08 why after rook e6 bishop not to d4 and knight can't take coz mate after pawn move?? and i think is draw too..
13.Re6 Bd4 loses to e.g. 14.Rc6+ Kd3+ 15.Nxd4 with the rook stopping promotion.
I get it.. thanks for explanation..
@@Rocky64 That's only for the "cooked" version. With the corrected version placing a WP on c4 you no longer have the rook check on c6. How do you beat black's Bd4 then?
@@peteneville698 It's more complicated with a WP on c4, but it's still a win for White according to Stockfish analysis. 13.Re6 Bd4 14.Re1 stops the promotion (14...Kd3+ 15.Nxd4). Black can threaten M3 with e.g. 14...Bf6, but White can afford to sac the rook with 15.Rb1!, e.g. 15...cxb1=Q+ 16.Kxb1 Kxc4 tablebase win, or 15...Kxc4+ 16.Rb2 - White is a rook up unless Black plays ...Bxb2+ Kxb2 which simplifies to an easy ending for White.
Correct me if I am wrong.
But after the first bishop sacrifice you move knight to F6 instead of pawn to B7, then next move, move knight to G4, after, it controls check mate threat, and if king moves for it, push D pawn, or take threatening queen pawn with king, it shouldn't be a stalemate situation
You keep queen threat in check with first knight, mate threat from king moving is blocked by knight for at least 2 moves, enough for the rook and you still have an easy queen at both B and E and a close one for F
That or I'm just blanking an obvious reason not to
'But after the first bishop sacrifice you move knight to F6 instead of pawn to B7, then next move, move knight to G4, after, it controls check mate threat'
Nf6 Be5
Ng4 Bd4
White has no good followup, and black is going to checkmate white shortly thereafter.
at 4:38, couldn't you play bishop D4? then black bishop takes, horse takes, king takes, and white king moves to B2? Finally finishing by moving the other pawns up?
'then black bishop takes, horse takes, king takes'
No, king does not take. Black just promotes with checkmate.
At 13:15, if Kd3, then Kb2 allows Kc1 escape and Nd2 block or Nc5!. I don't know whether that is enough to win, however.
... Kd3
Kb2 Be5+
Kc1 Kc3
After this, black threatens Bf4 checkmate.
@@thetaomegatheta I could stretch it a few moves, but you are basically right.
12:22 Is there really no way to win with 2 pawns and a knight vs 1 bishop? I feel like there's gotta be way to slowly move those pawns up with the knight and king guarding them. Just keep the king and knight on white spaces and guard the pawn when it's on black. Wish you played that part out so show how it's a guaranteed draw.
0:46 There is obviously only one move that will stop the pawn from being promoted on Black's next move.