Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. g3 Bg4 3. Bg2 Nc6 4. O-O e6 5. d3 Qf6 6. Nc3 h6 7. e4 Nd4 8. exd5
Nxf3+ 9. Bxf3 Qxf3 10. Qxf3 Bxf3 11. dxe6 fxe6 12. Nb5 O-O-O 13. Nxa7+ Kb8 14.
Nb5 Nf6 15. Bf4 Bd6 16. Rfe1 Bxf4 17. gxf4 Rhe8 18. a4 Nd5 19. a5 Nxf4 20. a6
bxa6 21. Rxa6 Rd7 22. Rea1 Kb7 23. Ra7+ Kb6 24. c4 Nxd3 25. R1a6+ Kc5 26. Nxc7
Rxc7 27. Rxc7+ Kd4 28. Rd6+ Bd5 29. cxd5 exd5 30. Rxg7 Nf4 31. Rg4 *
Position (FEN): 4r3/8/3R3p/3p4/3k1nR1/8/1P3P1P/6K1 b - - 2 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 583
Best move: Re1#