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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 f5 0
3 Bg7 0
4 Ng4 0
5 e6 0
6 Kd6 0
7 Rb8 0
8 a5 0
9 c5 0
10 Ng8 0
11 Rd8 0
12 Ra8 0
13 Nf5 0
14 Kd8 0
15 Kc8 0
16 Kc7 0
17 Rc8 0
18 a6 0
19 Ke6 0