Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 g6 7. Be3 Bg7 8. Qd2
O-O 9. O-O-O Bd7 10. Kb1 Ne5 11. g4 b5 12. h4 b4 13. Nd5 Nxd5 14. exd5 Qc7 15.
h5 Rfc8 16. hxg6 fxg6 17. Qh2 Kf7 18. Bd3 Nxd3 19. Rxd3 Qc4 20. Nb3 a5 21. Bd4
Rh8 22. Bxg7 Kxg7 23. Rd4 Qc7 24. Qh6+ Kg8 25. Re1 Rc8 26. Rd2 Be8 27. Nd4 Bf7
28. Ne6 Bxe6 29. dxe6 Rf8 30. f4 Rf6 31. Qg5 Qc8 32. f5 Kg7 33. Rh1 h6 34. Qe3
g5 35. Rdh2 Qc6 36. Qd3 Rc8 37. Rd1 Qc5 38. Rhd2 Qe5 39. Qf3 Rc7 40. Qh3 Rf8
41. Qh5 Rf6 42. Qh1 Qf4 43. Qh3 Rc4 44. Rg2 a4 45. Rdg1 Qe5 46. Qd3 Re4 47. Rd1
Re1 48. Rd2 a3 49. Rxe1 *
Position (FEN): 8/4p1k1/3pPr1p/4qPp1/1p4P1/p2Q4/PPPR4/1K2R3 b - - 0 49
Black to move.
Themes: Queenside Attack Endgame Mate in 1 
Puzzle rating: 1593
Best move: Qxb2#