Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d3 Nf6 4. Nbd2 e5 5. b3 Be7 6. Bb2 Nc6 7. Qe2 O-O 8.
O-O-O b5 9. d4 Nxd4 10. Nxd4 cxd4 11. Qxb5 a5 12. c3 a4 13. cxd4 Ba6 14. Qxa6
Rxa6 15. Bxa6 Qa8 16. Bb5 a3 17. Bc3 Nxe4 18. Nxe4 Qxe4 19. dxe5 Bg5+ 20. Bd2
Rc8+ 21. Bc4 Qd3 22. Bxg5 Qc3+ 23. Kb1 *
Position (FEN): 2r3k1/5ppp/3p4/4P1B1/2B5/pPq5/P4PPP/1K1R3R b - - 2 23
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 933
Best move: Qb2#