[White "   Marciniak - Dobosz, Poland, 1973   "]   [Black "Black to play and win"]   [Result "0-1"]   [FEN "r3r1k1/p2q1ppp/2p5/2bp4/5Pn1/1PQ5/PBP3PP/RN3R1K b - - 0 1"]   {The theme of the combination is diversion:}   1... Nf2+ 2 Rxf2 Bd4!   {And Black wins the piece on b2 back, and the rook on a1 as well. And if}   3 Qxd4 Re1 { is mate}