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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 f5 0
3 d6 0
4 Na6 0
5 g4 0
6 Bg7 0
7 Nh6 0
8 b5 0
9 b6 0
10 e6 0
11 d5 0
12 Kd8 0
13 f6 0
14 Bh6 0
15 Nf6 0
16 Nc6 0
17 e5 0