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

Book: ∞ / 0

# move proof disproof
1 h4 0
2 a6 0
3 Rg7 0
4 Re8 0
5 Rd8 0
6 Nh7 0
7 Rc8 0
8 c5 0
9 a5 0
10 g5 0
11 Rb8 0
12 Nd7 0
13 Rh8 0