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

Book: ∞ / 0

# move proof disproof
1 Rb8 0
2 d5 0
3 e4 0
4 a6 0
5 a5 0
6 h5 0
7 Nf6 0
8 Ne7 0
9 Nh6 0
10 h6 0
11 g6 0
12 g5 0
13 d6 0
14 Ba6 0
15 Bb7 0