Chess puzzle (Checkmate)
Moves: 1. e3 e5 2. b3 d5 3. Nf3 Bd6 4. Bb2 Nc6 5. Be2 Bg4 6. d3 Qe7 7. a3 f5 8. Nc3
Nf6 9. Nb5 Bc5 10. b4 Bb6 11. Nh4 Bxe2 12. Qxe2 g6 13. Nf3 O-O-O 14. O-O h6 15.
Nc3 g5 16. Na4 Nd7 17. Nxb6+ Nxb6 18. b5 Nb8 19. Nxe5 Rhg8 20. Bd4 N8d7 21.
Nxd7 Qxd7 22. a4 Qe8 23. Rfb1 Nd7 24. Bxa7 b6 25. a5 Kb7 26. axb6 cxb6 27. c3
Ra8 28. Qa2 Qe6 29. d4 Rge8 30. Rb4 f4 31. c4 fxe3 32. cxd5 exf2+ 33. Qxf2 Qxd5
34. Qb2 Rxa7 35. Rxa7+ Kxa7 36. Qa3+ Kb7 37. Qa6+ Kc7 38. Qa7+ Kd6 39. Qa1 Qe6
40. d5 Qe3+ 41. Kh1 Qe1+ 42. Qxe1 *
Position (FEN): 4r3/3n4/1p1k3p/1P1P2p1/1R6/8/6PP/4Q2K b - - 0 42
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 416
Best move: Rxe1#