Chess puzzle (Checkmate)
Moves: 1. e3 d5 2. c4 Nf6 3. Nc3 e6 4. b3 c5 5. Bb2 d4 6. exd4 cxd4 7. Nb5 Nc6 8. Nf3
Bc5 9. Na3 d3 10. Qb1 Ne4 11. Bxd3 Nxf2 12. Bxh7 Nxh1 13. Be4 Rxh2 14. Bxc6+
bxc6 15. d4 Bb4+ 16. Ke2 Rxg2+ 17. Ke3 Bd2+ 18. Kd3 Qf6 19. Nxd2 Qf5+ 20. Kc3
Qa5+ 21. b4 Rg3+ 22. Kc2 Qa4+ 23. Nb3 e5 24. Qxh1 Bf5+ 25. Kc1 Qxb4 26. Qxc6+
Ke7 27. Qxa8 *
Position (FEN): Q7/p3kpp1/8/4pb2/1qPP4/NN4r1/PB6/R1K5 b - - 0 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 725
Best move: Rg1#