Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f4 O-O 8.
Bc4 Nxe4 9. Nxc6 bxc6 10. Nxe4 d5 11. Bxd5 cxd5 12. Ng5 Bxb2 13. Rb1 Bc3+ 14.
Bd2 Qa5 15. Bxc3 Qxc3+ 16. Qd2 Qc5 17. Rf1 Ba6 18. Rf3 Rab8 19. Rxb8 Qg1+ 20.
Rf1 *
Position (FEN): 1R3rk1/p3pp1p/b5p1/3p2N1/5P2/8/P1PQ2PP/4KRq1 b - - 2 20
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 890
Best move: Qxf1#