Chess puzzle (Checkmate)
Opening: Center_Game, Center_Game_Paulsen_Attack_Variation
Moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 g6 5. Nc3 Bg7 6. Bd2 Nge7 7. O-O-O O-O
8. h4 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. c4 Qe5 12. Nf3 *
Position (FEN): r1b2rk1/ppp2pbp/2n3p1/4q3/2P4P/4QN2/PP1B1PP1/2KR1B1R b - - 2 12
Black to move.
Themes: Queenside Attack Opening Mate in 1 
Puzzle rating: 755
Best move: Qxb2#