Black to move

1) +56.77 (31 ply) 34...Qc7 35.Qa8+ Qc8 36.Qxd5+ Qd7 37.Qa8+ Qc8 38.Qxa7 Qe6 39.Rxe6 fxe6 40.Qxh7 Re8 41.Nc5 Re7 42.Nb7+ Rxb7 43.Qxb7 Ke8 44.Qh7 g3 45.hxg3 Kf8 46.Qd7 e5 47.Qf5+ Ke7 48.Qxe5+ Kd7 49.Qc5 Kd8 50.Qxh5 Kc7 51.Qc5+ Kd7 52.Qa5 Kd6 53.Qf5 Ke7 54.Qe5+ Kd7 55.Qd5+ Kc8 56.Qc6+ Kd8 57.Qd6+ Kc8 58.Qb6 Kd7

2) +56.94 (31 ply) 34...Qc8 35.Qxd5+ Qd7 36.Qa8+ Qc8 37.Qxa7 Qe6 38.Rxe6 fxe6 39.Qxh7 Re8 40.Nc5 Re7 41.Nb7+ Rxb7 42.Qxb7 Ke8 43.Qh7 g3 44.fxg3 Kf8 45.Qd7 Kg8 46.Qxe6+ Kg7 47.Qe5+ Kg6 48.Qd6+ Kh7 49.Qd5 Kg7 50.Qg5+ Kf7 51.Qxh5+ Ke7 52.Qg4 Kf6 53.Qh4+ Kg7 54.Qg5+ Kf8 55.Qf6+ Ke8 56.Qe6+ Kd8 57.Qf7 Kc8

3) +59.66 (31 ply) 34...Rh6 35.Qxh6 Kc8 36.Rc1+ Qc7 37.Rxc7+ Kxc7 38.Qf4+ Kd8 39.Qd6+ Ke8 40.Qb8+ Ke7 41.Qxg8 Kf6 42.Qh8+ Ke7 43.Qxh5 Ke8 44.Qxg4 Ke7 45.Qf5 a6 46.Qe5+ Kf8 47.Qxd5 Kg8 48.Qa8+ Kg7 49.Qxa6 Kh7 50.Qf6 Kg8 51.Qf4 Kh8 52.Qd4+ Kg8 53.Nb6 Kf8 54.Nd5 Ke8 55.Nc7+ Ke7 56.Qe5+ Kd7

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6.0 minute analysis by Stockfish 9 v010218