Review our analysis using Olga here
1) mated-in-7 (21 ply) 33...Rxc8 36.Qd7+ Kb6 37.Na4+ Ka6 38.Qxc8+ Ka5 39.Qa8+ Kb5 40.Qb7+ Kc4 41.Qxb3+ Kd4 42.Qd3#
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1 minute analysis by
Stockfish 11
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