Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. d4 e6 3. c3 c5 4. g3 d5 5. Bg2 Nc6 6. O-O Bd6 7. Bg5 h6 8. Bxf6
Qxf6 9. e3 O-O 10. Nbd2 b6 11. Re1 Bb7 12. Nb3 Rfe8 13. dxc5 bxc5 14. Qe2 c4
15. Nbd4 e5 16. Nxc6 Bxc6 17. Red1 Rab8 18. Rd2 e4 19. Nd4 Bd7 20. Rad1 a5 21.
a3 Ba4 22. Rf1 Rb6 23. f3 exf3 24. Rxf3 Qe5 25. Kf2 Bd7 26. h3 g5 27. g4 Bc5
28. Nf5 Kh7 29. Nd4 f6 30. Nf5 Rbe6 31. Nd4 R6e7 32. Rd1 Kg6 33. Rd2 h5 34. Rg3
h4 35. Rf3 Bd6 36. Rd1 Rf7 37. Qc2+ Kg7 38. Nf5+ Bxf5 39. Qxf5 Qxf5 40. Rxf5
Bg3+ 41. Kf1 Rxe3 42. Rdxd5 *
Position (FEN): 8/5rk1/5p2/p2R1Rp1/2p3Pp/P1P1r1bP/1P4B1/5K2 b - - 0 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 657
Best move: Re1#