Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Albin_Countergambit
Moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. a3 c5 5. Bf4 Ne7 6. h3 Ng6 7. Bh2 Nc6 8. Nf3
Qe7 9. Nbd2 Ngxe5 10. Nxe5 Nxe5 11. g3 *
Position (FEN): r1b1kb1r/pp2qppp/8/2p1n3/2Pp4/P5PP/1P1NPP1B/R2QKB1R b KQkq - 0 11
Black to move.
Themes: Pin Opening Mate in 1, Smothered Mate 
Puzzle rating: 1613
Best move: Nd3#