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

Book: ∞ / 0

# move proof disproof
1 Re8 0
2 Rg7 0
3 a6 0
4 h6 0
5 Nd7 0
6 Rh8 0
7 h5 0
8 Rc8 0
9 Rd8 0
10 a5 0
11 Rb8 0
12 g5 0
13 c5 0