Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. d5 Na6 8. Bg5 h6
9. Bh4 g5 10. Bg3 Nc5 11. Nd2 a5 12. b3 Bd7 13. a3 Qe7 14. Rb1 Nh7 15. f3 f5
16. O-O Nf6 17. Qc2 Nh5 18. Bf2 Nf4 19. b4 axb4 20. axb4 Na4 21. Rfe1 Nxc3 22.
Qxc3 Nxe2+ 23. Rxe2 g4 24. fxg4 fxg4 25. c5 h5 26. Nc4 Bb5 27. Rc2 Bxc4 28.
Qxc4 Rf4 29. Be3 Rf7 30. Qb5 Ra3 31. Bc1 Ra8 32. Qxb7 Raf8 33. Be3 Qf6 34. Rcc1
Bh6 35. Kh1 Bxe3 36. Rg1 Bxg1 37. Rxg1 Qf1 38. h4 g3 39. cxd6 Qxg1+ 40. Kxg1 *
Position (FEN): 5rk1/1Qp2r2/3P4/3Pp2p/1P2P2P/6p1/6P1/6K1 b - - 0 40
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 667
Best move: Rf1#