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

Book: ∞ / 0

# move proof disproof
1 c5 0
2 a6 0
3 Bg7 0
4 Nf6 0
5 Bb7 0
6 Kd6 0
7 Kc7 0
8 a5 0
9 Ke6 0
10 g4 0
11 Rg8 0
12 f6 0
13 Na6 0
14 f5 0
15 Ba6 0
16 e6 0
17 e5 0
18 Bh6 0
19 Ke8 0
20 Kd8 0