Black to move

1) mated-in-15 (22 ply) 40...Ne7 41.dxe7 Qe8 42.Bxe5+ Rxe5 43.Qxe5+ Kb7 44.Rf8 Bd7 45.Rxe8 Bxe8 46.Qd5+ Ka7 47.Qd8 Bf7 48.e8=R Bxe8 49.Qxe8 a5 50.c5 Kb7 51.Qd7+ Ka6 52.Qc6+ Ka7 53.Qc7+ Ka8 54.c6 a4 55.Qb7#

2) mated-in-10 (22 ply) 40...Bb7 41.Bf2 Ne7 42.dxe7 Qe8 43.Rf8 Bc6 44.Qa7+ Kc8 45.Bb6 Bb7 46.Rxe8+ Kd7 47.Rd8+ Kxe7 48.Qxb7+ Kf6 49.Rf8+ Kg6 50.Qf7#

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1.0 minute analysis by Stockfish 11 v064