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

Book: ∞ / 0

# move proof disproof
1 d5 0
2 b5 0
3 Kf8 0
4 b6 0
5 d6 0
6 h5 0
7 Rg8 0
8 h6 0
9 Na6 0
10 f5 0
11 Nc6 0
12 a6 0
13 Rf8 0
14 Ke7 0
15 Kd8 0