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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Ne7 0
3 h5 0
4 Rb8 0
5 Nb3 0
6 a6 0
7 Nf6 0
8 Ba6 0
9 Nc2 0
10 Bb7 0
11 d6 0
12 d5 0