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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 f6 0
3 Bb7 0
4 Ke6 0
5 g4 0
6 Kd6 0
7 Kc7 0
8 Kd8 0
9 Ke8 0
10 Ba6 0
11 f5 0
12 Bh6 0
13 Bg7 0
14 a6 0
15 Nf6 0
16 e6 0
17 e5 0
18 Na6 0
19 c5 0
20 Nh6 0