Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. b3 Bf5 6. Bb2 Bb4+ 7. Nfd2 Nxe5 8.
a3 Qe7 9. axb4 *
Position (FEN): r3k1nr/ppp1qppp/8/4nb2/1PPp4/1P6/1B1NPPPP/RN1QKB1R b KQkq - 0 9
Black to move.
Themes: Pin Opening Mate in 1, Smothered Mate 
Puzzle rating: 1279
Best move: Nd3#