Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb3 Nf6 6. f3 Qb6 7. Nc3 Bb4 8.
Bd2 O-O 9. Bc4 a5 10. Qe2 a4 11. Nc1 Nd4 12. Qd3 Nc6 13. N1e2 Nh5 14. O-O-O a3
15. Be3 axb2+ 16. Kb1 Bc5 17. Nd5 Qa7 18. Bxc5 Qxc5 19. Bb3 Nb4 20. Nxb4 Qxb4
21. Rd2 b6 22. Rhd1 Ba6 23. Qxd7 Bxe2 24. Rxe2 Nf4 25. Red2 h6 26. g3 Ng6 27.
Qc6 Ne7 28. Qb7 Rfb8 29. Qc7 Rc8 30. Qxe5 Ra3 31. Qxb2 Rxb3 32. Qxb3 Qa5 33.
Rd7 Nc6 34. Rb7 Nb4 35. Rdd7 Nxc2 36. Rxf7 Qe1+ 37. Kb2 *
Position (FEN): 2r3k1/1R3Rp1/1p5p/8/4P3/1Q3PP1/PKn4P/4q3 b - - 2 37
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 890
Best move: Qa1#