Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Nc6 5. c4 cxd4 6. Nxd4 Qb6 7. Nxc6 Qxb2 8.
Be5 Qb6 9. Nd4 e6 10. Nb3 Ne4 11. Be2 Bb4+ 12. Kf1 O-O 13. cxd5 Rd8 14. Bd4 Qd6
15. dxe6 Bxe6 16. Qc2 Bf5 17. Bd3 Qg6 18. Qd1 Nxf2 19. Bxf5 Qxf5 20. Qf3 Qxf3
21. gxf3 Nxh1 22. Kg2 Rac8 23. Kxh1 Rc2 24. a4 Rdc8 25. a5 a6 26. Ra4 Bd6 27.
f4 Re2 28. Nc3 Rc2 29. Ne4 Re2 30. Nxd6 Rcc2 31. Rc4 *
Position (FEN): 6k1/1p3ppp/p2N4/P7/2RB1P2/1N2P3/2r1r2P/7K b - - 2 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1178
Best move: Re1#