[White "   Szabo - Kotov, Gronigen, 1946   "]   [Black "White to play and win"]   [Result "1-0"]   [FEN "r1b2rk1/1p2qpp1/p1n1pn1p/6N1/1PB5/P1N1P3/1BQ2PPb/R4R1K w - - 0 1"]   {The solution of today's problem is a fairly familiar theme:}   1 Nd5! exd5 2 Bxf6   {Now Black can delay the loss with}   2... Bf5   3 Qxf5 g6   {And now both the primitive}  4 Bxe7   ({but also the more sophisticated}  4 Qxg6!+ fxg6 5 Bxd5+  {win an exchange for White.})