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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 c5 0
3 e6 0
4 Rb7 0
5 Ke6 0
6 f5 0
7 Kd6 0
8 f6 0
9 Rd8 0
10 Re8 0
11 h6 0
12 Rg8 0
13 g4 0
14 Ra7 0
15 Kd8 0
16 Ke8 0
17 Rf8 0
18 e5 0
19 Bb7 0
20 h5 0