Chess puzzle (Checkmate)
Opening: Alekhine_Defense, Alekhine_Defense_Scandinavian_Variation
Moves: 1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. d4 Nc6 6. c3 b6 7. Nf3 Bb7 8.
c4 Qh5 9. Be2 Qg6 10. O-O O-O-O 11. Be3 Ne5 12. Nxe5 *
Position (FEN): 2kr1b1r/pbp1pppp/1p4q1/4N3/2PP4/4B3/PP2BPPP/R2Q1RK1 b - - 0 12
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 812
Best move: Qxg2#