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

Book: ∞ / 0

# move proof disproof
1 g5 0
2 Ra8 0
3 a5 0
4 f6 0
5 Rd8 0
6 Rc8 0
7 Ng8 0
8 Nc6 0
9 g6 0
10 Nc8 0
11 Ng6 0
12 Rb8 0
13 Nd5 0
14 f5 0
15 Nf5 0
16 a6 0