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

Book: ∞ / 0

# move proof disproof
1 c4 0
2 Bh6 0
3 Kc7 0
4 Kd6 0
5 Bg7 0
6 Bb7 0
7 Nb8 0
8 Nc7 0
9 Nb4 0
10 Ke8 0
11 Kd8 0
12 Nf6 0
13 Rg8 0
14 Rb8 0
15 Kc6 0
16 Ke6 0
17 e5 0
18 e6 0