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

Book: ∞ / 0

# move proof disproof
1 d5 0
2 Ra6 0
3 Ra7 0
4 g5 0
5 g6 0
6 Ba6 0
7 d6 0
8 Rb8 0
9 Nf6 0
10 Bb7 0
11 Ne7 0
12 h6 0
13 Nh6 0