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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Nh6 0
3 Ne7 0
4 Nc2 0
5 Nb3 0
6 d5 0
7 d6 0
8 a5 0
9 Nf6 0
10 Bb7 0
11 h6 0
12 Ba6 0
13 g6 0
14 g5 0
15 Rb8 0