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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 e5 0
3 e6 0
4 Na6 0
5 Nd7 0
6 a5 0
7 Bg7 0
8 a6 0
9 Kc7 0
10 Kc8 0
11 Ke8 0
12 Kd7 0
13 f6 0
14 f5 0
15 h5 0