Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Nc3 Bb4 6. Bd2 Qe7 7. a3 Ngxe5 8.
Nxe5 Nxe5 9. axb4 *
Position (FEN): r1b1k2r/ppppqppp/8/4n3/1PP5/2N5/1P1BPPPP/R2QKB1R b KQkq - 0 9
Black to move.
Themes: Pin Opening Mate in 1, Smothered Mate 
Puzzle rating: 1158
Best move: Nd3#