Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4 5. c4 e6 6. cxd5 cxd5 7. d4 Be7 8. Bf4
Nc6 9. Ne5 Nxe5 10. Bxe5 O-O 11. f3 Bf5 12. Nc3 Nd7 13. Bf4 a6 14. e4 dxe4 15.
fxe4 Bg6 16. Qb3 b5 17. d5 Nc5 18. Qc2 Rc8 19. Qf2 Nd3 20. Qe2 Nxf4 21. gxf4
Bc5+ 22. Kh1 exd5 23. Nxd5 Re8 24. Qd3 h6 25. b4 Ba7 26. Rac1 Rxc1 27. Rxc1 Qh4
28. Rc7 Qf2 29. Qf1 Bxe4 30. Qxf2 Bxf2 31. Bxe4 Rxe4 32. Kg2 Bh4 33. Rc6 Rd4
34. Rd6 Rc4 35. Rxa6 Rc2+ 36. Kh3 Be1 37. Ra5 Rc4 38. Rxb5 Kh7 39. a4 Rd4 40.
a5 Rd3+ 41. Kg4 g6 42. a6 *
Position (FEN): 8/5p1k/P5pp/1R1N4/1P3PK1/3r4/7P/4b3 b - - 0 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1770
Best move: f5#