Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
O-O 9. Qb3 Qe7 10. Nh4 a5 11. Nxf5 exf5 12. Ne2 Nbd7 13. Ng3 g6 14. Rd1 Nb6 15.
Bf1 Nbd5 16. Bd2 Bd6 17. Rac1 h5 18. Bc4 h4 19. Nf1 Kg7 20. Be1 Rh8 21. f3 h3
22. g3 g5 23. Qc2 Qe6 24. Bf2 g4 25. fxg4 Nxg4 26. Bd3 Ndxe3 27. Nxe3 Nxe3 28.
Bxe3 Qxe3+ 29. Qf2 f4 30. gxf4 Bxf4 31. Rc2 Rh5 32. Kh1 Rg5 33. Rf1 Qxf2 34.
Rcxf2 Be3 35. Rxf7+ Kg8 36. R7f3 Bxd4 37. Rxh3 Rf8 38. Bh7+ Kg7 39. Rxf8 *
Position (FEN): 5R2/1p4kB/2p5/p5r1/P2b4/7R/1P5P/7K b - - 0 39
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 925
Best move: Rg1#