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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Kd6 0
3 Ke6 0
4 Ke8 0
5 Kc7 0
6 Bb7 0
7 Ng5 0
8 f6 0
9 e5 0
10 Kc6 0
11 Nc6 0
12 Nf6 0
13 Ra7 0
14 Rh8 0
15 Rf8 0
16 Re8 0
17 Nf8 0
18 e6 0
19 Rg8 0