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

Book: ∞ / 0

# move proof disproof
1 h5 0
2 e5 0
3 Ra6 0
4 Ra7 0
5 Rd8 0
6 Bb7 0
7 Rg8 0
8 a4 0
9 Rf8 0
10 Ba6 0
11 d6 0
12 Re8 0
13 Rb8 0
14 d5 0