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 g4 0
4 e6 0
5 h6 0
6 e5 0
7 Bg7 0
8 Ke6 0
9 Ba6 0
10 f5 0
11 Kc6 0
12 Kd6 0
13 Kc7 0
14 Kd8 0
15 Ke8 0
16 Rb8 0
17 h5 0
18 Nh6 0
19 Bb7 0
20 Bh6 0