Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. c4 d4 3. e3 dxe3 4. fxe3 Bg4 5. Qb3 Nd7 6. Qxb7 Ngf6 7. d4 e6 8.
Qc6 Bb4+ 9. Bd2 Bxd2+ 10. Nbxd2 O-O 11. Be2 Rb8 12. b3 Rb6 13. Qa4 h6 14. Qa3
Qc8 15. c5 Rb8 16. O-O Nh5 17. Rae1 Ndf6 18. Ne5 Bxe2 19. Rxe2 Nd5 20. Qc1 Qa6
21. Ndc4 Rfd8 22. Nxf7 Rf8 23. Ref2 Nhf6 24. Nfe5 Ne4 25. Rxf8+ Rxf8 26. Rxf8+
Kxf8 27. Nd7+ Kg8 28. Qf1 Qc8 29. Nce5 Qe8 30. c6 Nxe3 31. Qf3 Nxg2 32. Qxe4
Qh5 33. Qxg2 Qd1+ 34. Qf1 Qxd4+ 35. Kh1 Qe4+ 36. Kg1 Qe3+ 37. Qf2 Qc1+ 38. Kg2
Qg5+ 39. Kf1 Qc1+ 40. Qe1 Qf4+ 41. Ke2 Qxh2+ 42. Kd1 Qh5+ 43. Kc2 Qh2+ 44. Kc3
Qxa2 45. Qd1 Qa5+ 46. Kb2 Qb4 47. Qg4 Qd2+ 48. Ka3 Qa5+ 49. Qa4 Qe1 50. Qb4 *
Position (FEN): 6k1/p1pN2p1/2P1p2p/4N3/1Q6/KP6/8/4q3 b - - 11 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1476
Best move: Qa1#