Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8.
O-O Bxc3 9. bxc3 d5 10. Re1 O-O 11. Bd3 Re8 12. Bxe4 dxe4 13. Ng5 Bf5 14. Qb3
Qd7 15. Qxb7 h6 16. Nh3 Bxh3 17. gxh3 Rab8 18. Qa6 Rb6 19. Qf1 Qf5 20. Qg2 Nxd4
21. Re3 Nf3+ 22. Kh1 Rg6 23. Qf1 Qxh3 24. Qxh3 *
Position (FEN): 4r1k1/p1p2pp1/6rp/8/4p3/2P1Rn1Q/P4P1P/R1B4K b - - 0 24
Black to move.
Themes:  Middlegame Arabian Mate, Mate in 1 
Puzzle rating: 537
Best move: Rg1#