Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. d4 cxd4 3. c3 d6 4. Nf3 Bd7 5. Nxd4 Nf6 6. Bd3 Nc6 7. f4 e5 8. Nf3
Bg4 9. O-O Be7 10. Qb3 Bxf3 11. Qxb7 Qb6+ 12. Qxb6 axb6 13. Rxf3 exf4 14. Bxf4
O-O 15. Nd2 Ne5 16. Bxe5 dxe5 17. Nc4 Bc5+ 18. Kf1 Ng4 19. Rh3 Rad8 20. Rd1 g6
21. Ke2 Rxd3 22. Rdxd3 Ra8 23. b4 Rxa2+ 24. Kf3 Rf2+ 25. Kxg4 h5+ 26. Kg5 Kg7
27. g4 *
Position (FEN): 8/5pk1/1p4p1/2b1p1Kp/1PN1P1P1/2PR3R/5r1P/8 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1785
Best move: Be7#