Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Advance_Variation
Moves: 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Be4 6. f3 Bh7 7. Nc3 e6 8. Be3 Nd7
9. Bd3 Bxd3 10. Qxd3 c5 11. O-O-O c4 12. Qd2 b5 13. Nxb5 Qb6 14. Nc3 Rb8 15.
Na4 Qb5 16. b3 Qxa4 17. bxa4 *
Position (FEN): 1r2kbnr/p2n1pp1/4p2p/3pP3/P1pP2PP/4BP2/P1PQ4/2KR2NR b k - 0 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 815
Best move: Ba3#