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 Bg7 0
4 Na6 0
5 f5 0
6 Ke6 0
7 Nc6 0
8 e6 0
9 e5 0
10 Kc6 0
11 Kd6 0
12 c6 0
13 Ke8 0
14 Kd8 0
15 Kc8 0
16 a6 0
17 Bh6 0
18 Nh6 0