Chess puzzle (Checkmate)
Opening: Alekhine_Defense, Alekhine_Defense_OSullivan_Gambit
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 b5 4. Bxb5 c5 5. c4 cxd4 6. cxd5 Qa5+ 7. Bd2 Qxb5 8.
Qc2 Qxd5 *
Position (FEN): rnb1kb1r/p2ppppp/8/3qP3/3p4/8/PPQB1PPP/RN2K1NR w KQkq - 0 9
White to move.
Themes: Hanging Piece Opening Mate in 1 
Puzzle rating: 505
Best move: Qxc8#