Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bc4 Be7 6. O-O c5 7. Re1 Nf6 8.
Qe2 Nc6 9. Ng5 O-O 10. Nc3 Bg4 11. Qe3 Nh5 12. Qe4 Nf6 13. Qd3 h6 14. Nf3 Nb4
15. Qe2 Nxc2 16. Qxe7 Nxa1 17. Bd3 Bxf3 18. Qxd8 Rfxd8 19. gxf3 Re8 20. Rf1 Nd5
21. Nxd5 Re5 22. Be4 f5 23. d4 cxd4 24. Bf4 fxe4 25. Bxe5 dxe5 26. Rxa1 exf3
27. Re1 d3 28. Rxe5 d2 29. Nc3 Rc8 30. Rd5 Re8 31. Rxd2 *
Position (FEN): 4r1k1/pp4p1/7p/8/8/2N2p2/PP1R1P1P/6K1 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 399
Best move: Re1#