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

Book: ∞ / 0

# move proof disproof
1 g6 0
2 g5 0
3 Rf8 0
4 Re8 0
5 Rd8 0
6 Ra7 0
7 Rg8 0
8 h6 0
9 d5 0
10 d6 0
11 e4 0
12 Bb7 0
13 Rb8 0