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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 Ra7 0
3 Nf6 0
4 Bg7 0
5 Bb7 0
6 Nh6 0
7 h6 0
8 Bd7 0
9 Bh6 0
10 a5 0
11 Rb8 0
12 h5 0