Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Qh5 Nf6 3. Qxc5 Nxe4 4. Qf5 d5 5. Bb5+ Nc6 6. Qf3 e5 7. d3 Nf6 8.
Bg5 Be7 9. Nc3 Qa5 10. Bd2 Qc7 11. Nxd5 Nxd5 12. Qxd5 Be6 13. Bxc6+ bxc6 14.
Qf3 O-O 15. Qg3 h6 16. Bxh6 Bf6 17. Be3 Rab8 18. b3 Qa5+ 19. Bd2 Qa3 20. Bc1
Qe7 21. Nf3 *
Position (FEN): 1r3rk1/p3qpp1/2p1bb2/4p3/8/1P1P1NQ1/P1P2PPP/R1B1K2R b KQ - 6 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1497
Best move: e4