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

Book: ∞ / 0

# move proof disproof
1 Rg7 0
2 Nd7 0
3 Rd8 0
4 Rb8 0
5 g5 0
6 Re8 0
7 Rc8 0
8 Rh8 0
9 c6 0
10 a6 0
11 a5 0
12 c5 0