Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Karklins-Martinovsky_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nd3 Nxe4 5. Qe2 Qe7 6. Nf4 Nf6 7. Nc3 c6 8.
d4 d5 9. Be3 b6 10. f3 Ba6 11. Nd3 Nbd7 12. Qf2 O-O-O 13. O-O-O h6 14. Bf4 Nh5
15. Re1 Qf6 16. Be3 Bd6 17. g4 Nf4 *
Position (FEN): 2kr3r/p2n1pp1/bppb1q1p/3p4/3P1nP1/2NNBP2/PPP2Q1P/2K1RB1R w - - 1 18
White to move.
Themes:  Middlegame  
Puzzle rating: 1484
Best move: Nxf4