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

Book: ∞ / 0

# move proof disproof
1 c5 0
2 a5 0
3 a6 0
4 Kc6 0
5 c6 0
6 Ra8 0
7 Rc8 0
8 Re8 0
9 Nf6 0
10 e5 0
11 Kd6 0
12 Bg7 0
13 Rb8 0
14 Ke8 0
15 Kc8 0
16 Bh6 0
17 Nh6 0