Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. f4 O-O 8. Qf3
Qb6 9. Nb3 a5 10. a4 Nc6 11. Be2 Bg4 12. Qd3 Nb4 13. Qd2 Bxe2 14. Qxe2 Rac8 15.
Rc1 Rxc3 16. bxc3 Na2 17. Bh4 Nxc3 18. Qf3 Ncxe4 19. Bxf6 Nxf6 20. Nd2 Rc8 21.
Rb1 Qc5 22. Nb3 Qb6 23. Nd2 Qd4 24. Nb3 Qa7 25. Nd2 Rc7 26. c4 Nd7 27. Qe4 e5
28. f5 gxf5 29. Qxf5 Qe3+ 30. Kd1 Nc5 31. Re1 Qf4 32. Qxf4 exf4 33. Re8+ Bf8
34. Rb5 f6 35. Rxa5 Kf7 36. Raa8 Bg7 37. Rac8 Rd7 38. Red8 Rxd8 39. Rxd8 Ke6
40. Kc2 Nxa4 41. Kd3 Nc5+ 42. Kd4 *
Position (FEN): 3R4/1p4bp/3pkp2/2n5/2PK1p2/8/3N2PP/8 b - - 3 42
Black to move.
Themes: Discovered Attack Endgame Mate in 1 
Puzzle rating: 1129
Best move: f5#