Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. Nf3 c5 4. e3 Nf6 5. a3 cxd4 6. Nxd4 Be7 7. Nc3 O-O 8. b4
dxc4 9. Bxc4 e5 10. Nde2 Qc7 11. Qb3 a6 12. Bb2 b5 13. Bd5 Bb7 14. Bxb7 Qxb7
15. O-O Nbd7 16. Rfd1 Nb6 17. Rac1 Rac8 18. Ng3 Nc4 19. Ba1 Rfd8 20. Nf5 Bf8
21. Ne2 g6 22. Nfg3 h5 23. a4 Bh6 24. axb5 axb5 25. Qc3 Qb6 26. Nf1 Ne4 27. Qb3
Qf6 28. f3 Ned6 29. f4 Qe6 30. fxe5 Nf5 31. Nf4 Qb6 32. g3 Nfxe3 33. Nxe3 Nxe3
34. Rxd8+ Rxd8 35. Rc5 Bxf4 36. gxf4 Rd1+ 37. Kf2 Ng4+ 38. Kg3 Rxa1 39. e6 Qxe6
40. Qxe6 fxe6 41. Rxb5 Ra3+ 42. Kh4 Nf2 43. Kg5 Ra7 44. Kxg6 Ne4 *
Position (FEN): 6k1/r7/4p1K1/1R5p/1P2nP2/8/7P/8 w - - 1 45
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 543
Best move: Rb8#