Chess puzzle (Crushing)
Opening: Sicilian_Defense, Sicilian_Defense_Taimanov_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bb4 6. Bc4 d5 7. exd5 exd5 8.
Qe2+ Nge7 9. Bb3 O-O 10. Nxc6 bxc6 11. O-O a5 12. a3 Bxc3 13. bxc3 Ba6 14. c4
dxc4 15. Bxc4 Bxc4 16. Qxc4 Qc7 17. Re1 Rfe8 18. Bf4 Qb7 19. Rab1 Qa6 *
Position (FEN): r3r1k1/4nppp/q1p5/p7/2Q2B2/P7/2P2PPP/1R2R1K1 w - - 7 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1319
Best move: Qxa6