Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. Nc3 dxc4 4. Bg5 Qxg5 5. Nf3 Qd8 6. Nxe5 Be6 7. e3 f6 8.
Nxc4 Nd7 9. Qf3 c6 10. Rd1 Ne7 *
Position (FEN): r2qkb1r/pp1nn1pp/2p1bp2/8/2NP4/2N1PQ2/PP3PPP/3RKB1R w Kkq - 2 11
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 930
Best move: Nd6#