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

Book: ∞ / 0

# move proof disproof
1 Bg7 0
2 Nf6 0
3 a5 0
4 h6 0
5 a6 0
6 Ra8 0
7 g4 0
8 Bh6 0
9 Nh6 0
10 Rc8 0
11 Rd8 0
12 Rb8 0