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

Book: ∞ / 0

# move proof disproof
1 h5 0
2 f5 0
3 e5 0
4 a5 0
5 e6 0
6 Bg7 0
7 Na6 0
8 Kd6 0
9 Kd8 0
10 Ke6 0
11 a6 0
12 Nf6 0
13 Kc7 0
14 Kc8 0
15 Ke8 0
16 f6 0