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

Book: ∞ / 0

# move proof disproof
1 Kb7 0
2 Ng8 0
3 Kc7 0
4 Kc8 0
5 Nf5 0
6 c5 0
7 f6 0
8 f5 0
9 a5 0
10 Bg7 0
11 Ng4 0
12 a6 0
13 e6 0