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

Book: ∞ / 0

# move proof disproof
1 Rg7 0
2 Ra7 0
3 Re8 0
4 Rd8 0
5 e5 0
6 d5 0
7 d6 0
8 Rf8 0
9 Bb7 0
10 Rh8 0
11 g5 0
12 Rb8 0