Click on the third or sixth rank to set the en passant target square.

Book: ∞ / 0

# move proof disproof
1 Rb8 0
2 Nh6 0
3 Ne7 0
4 a6 0
5 Bb7 0
6 d6 0
7 d5 0
8 Nf6 0
9 Ba6 0