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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 c5 0
3 a6 0
4 Kd8 0
5 Kc8 0
6 Kb8 0
7 Rd8 0
8 Rb8 0
9 Nf5 0
10 Bg7 0
11 Ra8 0
12 Kd7 0
13 Kb7 0
14 Kb6 0
15 Ng8 0
16 Kd6 0
17 Ng4 0
18 Nf7 0
19 Rc8 0