Chess puzzle (Advantage)
Moves: 1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Nf3 Ng6 5. c4 Nf6 6. Bg5 Be7 7. Bxf6 Bxf6 8.
Nc3 d6 9. a4 a5 10. Be2 O-O 11. h3 c5 12. Nb5 Be7 13. Qd2 f5 14. Bd3 fxe4 15.
Bxe4 Nf4 16. g3 Nxh3 17. O-O-O h6 18. Rh2 Bg5 19. Nxg5 Nxg5 20. Bc2 Bd7 *
Position (FEN): r2q1rk1/1p1b2p1/3p3p/pNpPp1n1/P1P5/6P1/1PBQ1P1R/2KR4 w - - 2 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1628
Best move: f4