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

Book: ∞ / 0

# move proof disproof
1 c6 0
2 c5 0
3 Nc6 0
4 a5 0
5 f6 0
6 g5 0
7 e5 0
8 d5 0
9 e6 0
10 f5 0
11 d6 0
12 Bb7 0
13 g6 0