THE MCD CHALLENGE : 1,004,073 (BLITZ, rules in desc.)

Rules : build 3 extended SDPC at the start, then loop. No 8th PC is allowed, e.g. ending 2nd pc with extra O, and downstacking with the I piece and do extra O no I 8th PC.

[@wlsckacl_tsr4w]

Wow, this is perfect

[@maelmcd2]

:D