[White "   Gunsberg - Chigorin, Havana, 1890   "]   [Black "Black to play and win"]   [Result "0-1"]   [FEN "6k1/7r/p1n1p1pq/1pp1p3/4PrPb/PP1P1P2/1B2Q1K1/1BR4R b - - 0 35"]   {This is a beautiful combination on the theme of the deflection. Black wins by:}   35... Rxf3!!   {White has three defensive tries, which all fail.}   36 Rxh4 {The trickiest defense is delaying the rook capture by sacrificing the exchange on h4}   ({Taking with the king is no good:}   36 Kxf3 Qf4+ 37 Kg2 Qg3+ 38 Kf1 Rf7+   {And White gets mated})   ({Taking with the queen is only slightly prolong the loss:}   36 Qxf3 Qd2+ 37 Kg1 Bf2+!!   {Taking advantage of the overloaded queen}   38 Kf1 Nd4!!  {Taking advantage of the overloaded bishop. White is lost, for instance}   39 Bxd4 Qxc1+ 40 Kxf2 Rxh1)   36..Rg3+!  {Most direct, although  Qxh4  also wins}   37 Kxg3 Qxh4+ 38 Kg2  {and now the strongest is}   38... Nd4!! 39 Bxd3 Qh2+ 40 Kf1 Qf4+!!   {And we can see the point of  38... Nd4 . The rook on c1 is left undefended.}