Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nge7 5. d3 d5 6. exd5 exd5 7. Nf3 g6 8. Bf4
Bg7 9. Qd2 O-O 10. O-O Nf5 11. Rae1 Be6 12. Ng5 d4 13. Na4 Qe7 14. Nxe6 fxe6
15. Bd5 Nd8 16. g4 Qd7 17. Bb3 c4 18. dxc4 *
Position (FEN): r2n1rk1/pp1q2bp/4p1p1/5n2/N1Pp1BP1/1B6/PPPQ1P1P/4RRK1 b - - 0 18
Black to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1783
Best move: Nh4