Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. d4 d5 3. Bf4 e6 4. e3 c5 5. c3 Bd6 6. Bg3 Qc7 7. Nbd2 Nbd7 8. Bd3
b6 9. O-O Bb7 10. Re1 Bxg3 11. hxg3 O-O 12. Qc2 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5
15. e4 Rae8 16. exd5 Qxe1+ 17. Rxe1 Rxe1+ 18. Nf1 Bxd5 19. f3 Rfe8 20. Kf2 Bxa2
21. Nd2 Rh1 22. Ne4 Nxe4+ 23. Bxe4 Bb1 24. Qa4 Re7 25. Qa1 g6 26. Bxb1 Ree1 27.
Qxa7 *
Position (FEN): 6k1/Q4p1p/1p4p1/2p5/8/2P2PP1/1P3KP1/1B2r2r b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1120
Best move: Rhf1#