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

Book: ∞ / 0

# move proof disproof
1 Kc7 0
2 Kd7 0
3 e6 0
4 e5 0
5 Nd7 0
6 f5 0
7 h5 0
8 Bg7 0
9 f6 0
10 Ra7 0
11 Kc8 0
12 Ke8 0
13 a5 0