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

Book: ∞ / 0

# move proof disproof
1 c4 0
2 f5 0
3 Nf6 0
4 Na6 0
5 e6 0
6 a6 0
7 f6 0
8 e5 0
9 Rg8 0
10 a5 0
11 Bg7 0
12 g4 0
13 Ba6 0
14 Kd6 0
15 Bb7 0
16 Ke6 0
17 Bh6 0
18 Nc6 0
19 Kc6 0
20 Kc7 0
21 Kd8 0
22 Ke8 0