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

Book: ∞ / 0

# move proof disproof
1 Bb7 0
2 Rb8 0
3 Ra7 0
4 Ne7 0
5 Nh6 0
6 h4 0
7 d5 0
8 d6 0
9 Nf6 0