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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Bc8 0
3 h6 0
4 Re8 0
5 g4 0
6 Nf6 0
7 h5 0
8 e6 0
9 Ba6 0
10 Bh6 0
11 e5 0
12 Rc8 0
13 c5 0
14 Rd8 0
15 Bg7 0
16 Rb8 0
17 Nh6 0
18 a5 0