Chess puzzle (Advantage)
Moves: 1. e4 e5 2. f4 d6 3. Nf3 Nc6 4. fxe5 dxe5 5. Bc4 Bg4 6. d3 h6 7. O-O Bc5+ 8.
Kh1 Nf6 9. Nc3 Qe7 10. Qe1 O-O 11. Qg3 Kh7 12. h3 Bh5 13. Nh4 g6 14. Na4 Bd6
15. Qe3 g5 16. Nf5 Qd7 17. h4 Rg8 18. Nxh6 Ng4 19. Qd2 f6 20. hxg5 Rxg5 21.
Nxg4 *
Position (FEN): r7/pppq3k/2nb1p2/4p1rb/N1B1P1N1/3P4/PPPQ2P1/R1B2R1K b - - 0 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1623
Best move: Qxg4