Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Nc6 8. Be3
Be7 9. f3 O-O 10. Qd2 Qc7 11. O-O-O b5 12. g4 Bb7 13. h4 Nxd4 14. Bxd4 e5 15.
Be3 b4 16. Nd5 Nxd5 17. exd5 a5 18. Ba4 Rac8 19. Kb1 Qc4 20. h5 Ba6 21. g5 Bb5
22. Bb3 Qc7 23. a4 bxa3 24. bxa3 a4 25. Ba2 Qc3 26. Qc1 Rb8 27. Bd2 Bc4+ 28.
Bb3 Rxb3+ 29. cxb3 Bd3+ 30. Ka2 *
Position (FEN): 5rk1/4bppp/3p4/3Pp1PP/p7/PPqb1P2/K2B4/2QR3R b - - 2 30
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1813
Best move: axb3#