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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Rhg8 0
3 e6 0
4 a5 0
5 Rc8 0
6 Reg8 0
7 g6 0
8 c6 0
9 g5 0
10 c5 0
11 Ref8 0
12 Rhf8 0
13 Rb8 0
14 h5 0
15 Nf8 0
16 Ng5 0
17 Rd8 0
18 Nf6 0
19 Ra8 0