Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bc4 c6 4. Nc3 Bd6 5. d3 h6 6. a3 a5 7. d4 b5 8. Ba2 b4
9. axb4 axb4 10. Bxf7+ Kxf7 11. Rxa8 Ba6 12. dxe5 bxc3 13. Qxd6 Nxe4 14. Rxb8
cxb2 15. Bxb2 Qa5+ 16. Bc3 Qxc3+ 17. Kd1 Qa1+ 18. Rb1 *
Position (FEN): 7r/3p1kp1/b1pQ3p/4P3/4n3/5N2/2P2PPP/qR1K3R b - - 3 18
Black to move.
Themes: Hanging Piece Middlegame Mate in 1 
Puzzle rating: 1236
Best move: Qxb1#