Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. h3
Be6 9. Qf3 Nbd7 10. O-O-O Rc8 11. Nd5 Bxd5 12. exd5 Nb6 13. g4 e4 14. Qg2 Nbxd5
15. g5 Nxe3 16. fxe3 Nd7 17. Qxe4 O-O 18. h4 Nc5 19. Nxc5 Rxc5 20. Qxb7 Re5 21.
Rh3 Qa5 22. Kb1 g6 23. Qxa6 Qc5 24. Qc4 Qa7 25. Qd4 Qb7 26. Bc4 Rf5 27. Bd5 Qc8
28. Rh2 Re8 29. e4 Re5 30. Rf2 Rf8 31. Rdf1 Kh8 32. a4 Qb8 33. Rxf7 Rxf7 34.
Rxf7 Bf8 35. a5 Bg7 36. Qb6 Qe8 37. Qb7 Rxd5 38. Qxd5 Qb8 39. a6 *
Position (FEN): 1q5k/5Rbp/P2p2p1/3Q2P1/4P2P/8/1PP5/1K6 b - - 0 39
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 628
Best move: Qxb2#