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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Ke8 0
3 Kd8 0
4 Kc7 0
5 Ra7 0
6 Ra6 0
7 Na6 0
8 e5 0
9 Nc6 0
10 Kc6 0
11 Ke6 0
12 Kd6 0
13 Bg7 0
14 Bb7 0
15 e6 0
16 Bh6 0
17 a4 0
18 g2 0
19 Ba6 0
20 Nh6 0