Chess puzzle (Crushing)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Symmetrical_Variation
Moves: 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. cxd5 exd5 5. a3 c5 6. Nc3 c4 7. e3 a6 8. b3 b5
9. a4 Bb4 10. Bd2 Bxc3 11. Bxc3 Bd7 12. axb5 Bxb5 13. bxc4 dxc4 14. Bb4 Nc6 15.
Ba3 Na5 16. Be2 Nb3 17. Rb1 *
Position (FEN): r2qk2r/5ppp/p4n2/1b6/2pP4/Bn2PN2/4BPPP/1R1QK2R b Kkq - 7 17
Black to move.
Themes:  Opening  
Puzzle rating: 1225
Best move: Qa5+