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

Book: ∞ / 0

# move proof disproof
1 c6 0
2 a6 0
3 f5 0
4 Na6 0
5 Nd7 0
6 Nc6 0
7 e6 0
8 h5 0
9 a5 0
10 e5 0
11 Bg7 0
12 Kf7 0
13 Kd7 0
14 Kd8 0