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

Book: ∞ / 0

# move proof disproof
1 Rg8 0
2 Rd8 0
3 Re8 0
4 Rf8 0
5 g5 0
6 Rb8 0
7 d5 0
8 Ra7 0
9 d6 0
10 e5 0
11 Bb7 0