Chess puzzle (Checkmate)
Opening: Alekhine_Defense, Alekhine_Defense_Scandinavian_Variation
Moves: 1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. d4 c5 5. Nxd5 cxd4 6. Qxd4 Nb6 7. Bb5+ Nc6 8.
c4 e6 9. Be3 exd5 10. O-O-O dxc4 *
Position (FEN): r1bqkb1r/pp3ppp/1nn5/1B2P3/2pQ4/4B3/PP3PPP/2KR2NR w kq - 0 11
White to move.
Themes: Pin Opening Mate in 1 
Puzzle rating: 1885
Best move: Qxd8#