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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Kd8 0
3 e5 0
4 c5 0
5 g5 0
6 e6 0
7 f5 0
8 Nf6 0
9 Kd6 0
10 Ke6 0
11 Nh6 0
12 Na6 0
13 Ke8 0
14 Kc7 0
15 g6 0
16 Kc8 0
17 f6 0