Chess puzzle (Checkmate)
Moves: 1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Nf3 e4 5. Nd4 Nf6 6. Nxc6 bxc6 7. c4 Ba6 8. Nc3
Bb4 9. a3 Bxc3 10. Bxc3 O-O 11. Be2 c5 12. O-O d4 13. Bb2 d3 14. Bg4 Nxg4 15.
Qxg4 f6 16. Qxe4 Re8 17. Qc6 Qd6 18. Qf3 Rab8 19. b4 cxb4 20. axb4 Rxb4 21. Ba3
Bxc4 22. Bxb4 Qxb4 23. Qc6 Bb5 24. Qc1 c5 25. Rxa7 c4 26. Ra3 Rc8 27. Qc3 Qc5
28. Rfa1 Qc6 29. Ra5 Qc5 30. Rb1 Rb8 31. Qb4 Qh5 32. Rxb5 Rxb5 33. Qxb5 Qe2 34.
Qxc4+ Kf8 35. Rb8+ Ke7 36. Rb6 *
Position (FEN): 8/4k1pp/1R3p2/8/2Q5/3pP3/3PqPPP/6K1 b - - 4 36
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 509
Best move: Qd1#