Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Tartakower_Variation
Moves: 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Qe2+ Be7
8. Bf4 O-O 9. O-O-O Be6 10. h4 Qa5 11. a3 b5 12. Qd2 b4 13. axb4 *
Position (FEN): rn3rk1/p3bppp/2p1bp2/q7/1P1P1B1P/5N2/1PPQ1PP1/2KR1B1R b - - 0 13
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 568
Best move: Qa1#