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

Book: ∞ / 0

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