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

Book: ∞ / 0

# move proof disproof
1 Ke6 0
2 h5 0
3 Bg7 0
4 c6 0
5 e4 0
6 Rg8 0
7 Ke8 0
8 Kc6 0
9 Kc8 0
10 c5 0
11 Kd6 0
12 Qe8 0
13 Rh7 0
14 Rc8 0
15 Qc8 0
16 a6 0
17 e6 0
18 Rb8 0
19 a5 0
20 Qb8 0