Chess puzzle (Checkmate)
Moves: 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Bg5 a6 5. Qd2 h6 6. Be3 b5 7. O-O-O Bb7 8. f3
Nd7 9. h4 Ngf6 10. g4 h5 11. g5 Nh7 12. Nh3 c5 13. Nf4 cxd4 14. Bxd4 Ne5 15.
Ncd5 Nxf3 16. Qc3 Nxd4 17. Rxd4 Rc8 18. Qd2 e5 19. Nf6+ Nxf6 20. Rxd6 Nd7 21.
Bh3 Rc7 22. Nxg6 fxg6 23. Rf1 Qe7 24. Re6 Qxe6 25. Bxe6 Nc5 26. Bd5 Nxe4 27.
Qd3 Rd7 28. Qxe4 Bxd5 29. Qxg6+ Kd8 30. Qb6+ Kc8 31. Qxa6+ Bb7 32. Qxb5 Rhd8
33. a4 e4 34. a5 Rd5 35. Qc4+ Kb8 36. a6 Ba8 37. b3 e3 38. Qb4+ Ka7 39. Rf7+
R8d7 40. Re7 *
Position (FEN): b7/k2rR1b1/P7/3r2Pp/1Q5P/1P2p3/2P5/2K5 b - - 5 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 856
Best move: Rd1#