Chess puzzle (Checkmate)
Opening: Modern_Defense, Modern_Defense_Standard_Defense
Moves: 1. d4 g6 2. Nc3 Bg7 3. e4 d6 4. Be3 e5 5. Qd2 Nf6 6. O-O-O c6 7. dxe5 Ng4 8.
Bg5 Qb6 9. Qxd6 Bf8 10. Qd8+ Qxd8 *
Position (FEN): rnbqkb1r/pp3p1p/2p3p1/4P1B1/4P1n1/2N5/PPP2PPP/2KR1BNR w kq - 0 11
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 742
Best move: Rxd8#