Chess puzzle (Checkmate)
Opening: Vienna_Game, Vienna_Game_Other_variations
Moves: 1. e4 e5 2. Nc3 d5 3. exd5 Nf6 4. d3 Nxd5 5. Nxd5 Qxd5 6. Be3 Nc6 7. Qd2 Nd4 8.
c4 Qd7 9. O-O-O Qa4 10. Kb1 b5 11. Bxd4 exd4 12. Re1+ Be6 13. Nf3 bxc4 14. dxc4
Rb8 15. Nxd4 Ba3 16. Nb3 Rxb3 17. axb3 Qxb3 18. Bd3 O-O 19. Bc2 *
Position (FEN): 5rk1/p1p2ppp/4b3/8/2P5/bq6/1PBQ1PPP/1K2R2R b - - 3 19
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 828
Best move: Qxb2#