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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 Nd7 0
3 Nf6 0
4 e6 0
5 a5 0
6 Bg7 0
7 Rh7 0
8 Ra7 0
9 h5 0