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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Na6 0
3 Kc7 0
4 d5 0
5 d6 0
6 b4 0
7 Nh6 0
8 h5 0
9 g5 0
10 b6 0
11 Nf6 0
12 f5 0
13 Nc6 0
14 e5 0
15 g6 0
16 Ke8 0
17 f6 0
18 h6 0
19 e6 0