Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. d5 e6 3. e4 exd5 4. exd5 d6 5. Nc3 Nf6 6. Bg5 Be7 7. Bxf6 Bxf6 8.
Qd3 O-O 9. O-O-O a6 10. h4 b5 11. Nf3 Nd7 12. Kb1 c4 13. Qd2 Nc5 14. Ng5 Bf5
15. f3 b4 16. Nce4 b3 17. g4 bxc2+ 18. Qxc2 Bg6 19. h5 Bxe4 20. Nxe4 Nxe4 21.
fxe4 Rb8 22. b3 cxb3 23. axb3 Qa5 24. Qa2 Qc3 25. Rh3 Qe5 26. Bd3 Rfc8 27. Rhh1
Rxb3+ 28. Qxb3 *
Position (FEN): 2r3k1/5ppp/p2p1b2/3Pq2P/4P1P1/1Q1B4/8/1K1R3R b - - 0 28
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 984
Best move: Qa1#