Chess puzzle (Crushing)
Opening: Zukertort_Opening, Zukertort_Opening_Other_variations
Moves: 1. Nf3 d5 2. c3 c5 3. d4 Nc6 4. dxc5 e5 5. b4 a6 6. e3 Be6 7. Qa4 Qc7 8. b5 Na7
9. b6+ Qc6 10. Qa5 Nb5 11. a4 Nxc3 12. Qxc3 Bxc5 13. Nxe5 Qxb6 14. Bd2 Nf6 15.
a5 Qa7 16. Qb3 O-O 17. Nd3 d4 18. Nxc5 *
Position (FEN): r4rk1/qp3ppp/p3bn2/P1N5/3p4/1Q2P3/3B1PPP/RN2KB1R b KQ - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1237
Best move: Bxb3