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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Nc6 0
3 g4 0
4 Bf8 0
5 Kc6 0
6 Re8 0
7 c6 0
8 Rd8 0
9 Ra7 0
10 Bb7 0
11 c5 0
12 Rg8 0
13 Bg7 0
14 Ke6 0
15 Rf8 0
16 Kd6 0
17 Ke7 0
18 Kd8 0
19 Ke8 0