Chess puzzle (Checkmate)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Old_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 Bg4 5. Qb3 c5 6. Bxf7+ Kd7 7. Qxb7+ Kd6
8. dxc5+ Kxc5 9. Qxa8 *
Position (FEN): Qn1q1b1r/p3pBpp/5n2/2k5/6b1/4P3/PP3PPP/RNB1K1NR b KQ - 0 9
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1035
Best move: Qd1#