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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 Kf8 0
3 Rb8 0
4 e6 0
5 a6 0
6 h6 0
7 d6 0
8 h5 0
9 a5 0
10 Qc8 0
11 Nh6 0
12 e5 0
13 Nf6 0
14 d5 0
15 c5 0
16 c6 0
17 f5 0
18 Rc8 0
19 Qb8 0