Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 dxc6 5. Nc3 Nf6 6. e5 Nd5 7. Ne2 Be7 8.
O-O Qc7 9. d3 f6 10. c4 Nb6 11. Bf4 Qd8 12. b3 Bd7 13. Ng3 f5 14. Qd2 Qc7 15.
Bg5 Qd8 16. Rfe1 Bxg5 17. Nxg5 h6 18. Nh3 Qc7 19. Qd1 O-O-O 20. a3 g5 21. b4
cxb4 22. axb4 a6 23. Re2 Kb8 24. c5 Nd5 25. d4 Nxb4 26. Rb2 Nd5 27. Rab1 Bc8
28. Ne2 Qg7 29. Qa4 Ka8 30. Nc1 g4 31. Nf4 Nxf4 32. Nb3 Nd5 33. Rc1 Rd7 34. Na5
Rc7 35. Qa3 h5 36. Rcb1 h4 37. Nxb7 Rxb7 38. Qxa6+ Ra7 *
Position (FEN): k1b4r/r5q1/Q1p1p3/2PnPp2/3P2pp/8/1R3PPP/1R4K1 w - - 1 39
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1123
Best move: Rb8#