Chess puzzle (Checkmate)
Moves: 1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6 7. d4 Bg4 8. dxe5
dxe5 9. Nd5 Nxd5 10. cxd5 Bxf3 11. Bxf3 Nd4 12. Bg2 Bd6 13. e4 c6 14. Be3 cxd5
15. Bxd4 exd4 16. Qxd4 dxe4 17. Qxe4 Qb6 18. b3 Rab8 19. Rad1 Bc5 20. Rd5 Rbe8
21. Qd3 Re7 22. Qf5 Bd4 23. Qd3 Bf6 24. h4 a6 25. h5 h6 26. Qf5 Rfe8 27. Rfd1
Qe6 28. Qd3 Qe2 29. Qd2 Qxd2 30. R1xd2 Re2 31. Kf1 *
Position (FEN): 4r1k1/1p3pp1/p4b1p/3R3P/8/1P4P1/P2RrPB1/5K2 b - - 2 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 683
Best move: Re1#