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

Book: ∞ / 0

# move proof disproof
1 c4 0
2 f5 0
3 e5 0
4 Rg8 0
5 Nb4 0
6 Nc7 0
7 Nb8 0
8 e6 0
9 Nf6 0
10 f6 0
11 Bb7 0
12 Bh6 0
13 Rb8 0
14 Ke8 0
15 Kd8 0
16 Kc7 0
17 Kc6 0
18 Ke6 0
19 Kd6 0
20 Bg7 0