Chess puzzle (Crushing)
Moves: 1. d4 d6 2. e4 e6 3. Nf3 Be7 4. Nc3 Nf6 5. Bc4 O-O 6. O-O Bd7 7. a3 Bc6 8. Re1
d5 9. exd5 Nxd5 10. Nxd5 Bxd5 11. Bxd5 Qxd5 12. Ne5 Nc6 13. Nxc6 bxc6 14. c3
Rad8 15. Be3 c5 16. Qa4 cxd4 17. Bxd4 c5 18. Be3 Ra8 19. Rad1 Qb7 20. Rd7 Qe4
21. Rxe7 *
Position (FEN): r4rk1/p3Rppp/4p3/2p5/Q3q3/P1P1B3/1P3PPP/4R1K1 b - - 0 21
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 850
Best move: Qxa4