Queens, checks and passed pawns

9/9/2011 – Here White had just checked on c4 in order to capture the enemy Bc3 and after ...Qe4 followed by the advance of the e-pawn to set his own c-pawn in motion. Which continuation leads to victory for Black now? A) 38...Kh8 39.Qxc3 Qe4 B) 38...Kh7 39.Qd3+ f5 C) 38...Kh7 39.Qd3+ g6 The solution is here, but first ponder over it with a larger version of the diagram.

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