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

Book: ∞ / 0

# move proof disproof
1 b4 0
2 b6 0
3 Na6 0
4 g4 0
5 f5 0
6 f6 0
7 Kd8 0
8 d5 0
9 a6 0
10 d6 0
11 e6 0
12 e5 0
13 Nc6 0
14 Nf6 0
15 Nh6 0
16 Bh6 0
17 Bg7 0