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

Book: ∞ / 0

# move proof disproof
1 Re8 0
2 Rh8 0
3 Nd7 0
4 Ng6 0
5 Rd8 0
6 Ra7 0
7 Nh7 0
8 g6 0
9 Rb8 0
10 g4 0
11 a5 0
12 Rc8 0