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

Book: ∞ / 0

# move proof disproof
1 Rd8 0
2 h5 0
3 e4 0
4 Ra7 0
5 Re8 0
6 Rf8 0
7 d5 0
8 Bb7 0
9 Rg8 0
10 d6 0
11 Rb8 0