Chess puzzle (Checkmate)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Janowski-Larsen_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. h3 Bh5 7. O-O Bd6 8. Nc3
O-O 9. e4 Nfd7 10. Qb3 Qf6 11. e5 Qg6 12. exd6 Bxf3 13. Nb5 *
Position (FEN): rn3rk1/pppn1ppp/3Pp1q1/1N6/2BP4/1Q3b1P/PP3PP1/R1B2RK1 b - - 1 13
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 1128
Best move: Qxg2#