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

Book: ∞ / 0

# move proof disproof
1 Rg6 0
2 Rd6 0
3 Re6 0
4 Rf6 0
5 d6 0
6 Ra7 0
7 Ra8 0
8 h5 0
9 Bb7 0
10 Rc6 0
11 Rb6 0
12 d5 0