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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 Rc8 0
3 Re8 0
4 Rb8 0
5 a5 0
6 b6 0
7 a6 0
8 Bh6 0
9 Nh6 0
10 b5 0
11 Rd8 0
12 Nf6 0
13 Bg7 0