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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 e5 0
3 Bh6 0
4 Bg7 0
5 e6 0
6 Nd7 0
7 a5 0
8 h6 0
9 Nh6 0
10 Ra7 0
11 h5 0