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

Book: ∞ / 0

# move proof disproof
1 c5 0
2 a5 0
3 Kb8 0
4 Kd8 0
5 a6 0
6 Kb7 0
7 Kc7 0
8 Kd7 0
9 Nf6 0
10 Nh6 0
11 Rd8 0
12 Bg7 0
13 Bh6 0