廣東話數獨 數獨實戰 EP. 8 - Enjoy Sudoku Level 17

Hodoku Rating: 3002 (Extreme)
Techniques Used:
Row 48 36 unique rectangle type 7
Col 18 7 finned x wing
Block 4 lock 7
Col 6 129 xyz wing
Continuous loop xy chain 1 r1c2 r5c2 r5c9 r5c1 r9c1 r9c5 r5c5 r1c5
Col 9 remaining 1
Continuous loop xy chain 2 r1c2 r1c5 r1c9 r5c9 r5c2
Col 78 27 w wing
Block 6 remaining 2
Aic type 1 xy chain 7 r9c8 r9c5 r9c1 r5c1 r5c9 r6c7
Col 8 remaining 7
Block 3 23789 sue de coq
Aic type 2 5 r2c3 r6c3 r5c2 r5c9 5to7 r5c9 r1c9 7to9 r1c9 r1c5 9to1 r1c5 r1c2
Aic type 2 1 r3c3 r4c3 1to8 r4c3 r4c2 r7c2 r7c7 r3c7 r3c8