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

Book: ∞ / 0

# move proof disproof
1 Kd7 0
2 Kc7 0
3 Nf6 0
4 e5 0
5 e6 0
6 Na6 0
7 Nd7 0
8 a5 0
9 f5 0
10 g5 0
11 g6 0
12 f6 0
13 Ke8 0
14 Kc8 0
15 a6 0
16 Nh6 0