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

Book: ∞ / 0

# move proof disproof
1 Nb3 0
2 Nc2 0
3 d6 0
4 d5 0
5 Bb7 0
6 Ra7 0
7 h5 0
8 Rb8 0
9 a5 0