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

Book: ∞ / 0

# move proof disproof
1 g5 0
2 g6 0
3 Ra7 0
4 Re8 0
5 Ra6 0
6 f5 0
7 f6 0
8 Nh6 0
9 Rc8 0
10 Nc8 0
11 Nc6 0
12 Nd5 0
13 Nf6 0
14 Rd8 0
15 Ng6 0
16 Rb8 0
17 Nf5 0
18 a4 0