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

Book: ∞ / 0

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