Chess puzzle (Crushing)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Nc3 a6 5. d4 b5 6. Be2 cxd4 7. Nxd4 Bb7 8. O-O
Be7 9. f4 Nf6 10. e5 dxe5 11. fxe5 Nd5 12. Nxd5 Bxd5 13. Bh5 Qb6 14. Bxf7+ Kd7
15. Bxe6+ Bxe6 16. Kh1 Kc7 17. Be3 Nd7 18. a4 Bc5 *
Position (FEN): r6r/2kn2pp/pq2b3/1pb1P3/P2N4/4B3/1PP3PP/R2Q1R1K w - - 1 19
White to move.
Themes:  Middlegame  
Puzzle rating: 2163
Best move: a5