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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Re8 0
3 Rf8 0
4 Nf6 0
5 e6 0
6 Nf8 0
7 f6 0
8 Ke6 0
9 e5 0
10 Rg8 0
11 a5 0
12 Bb7 0
13 Ba6 0
14 Bf8 0
15 a6 0
16 Kd6 0
17 Kc6 0
18 Kc7 0
19 Kd8 0
20 Ke8 0
21 Rd8 0
22 Bg7 0
23 Nc6 0
24 Na6 0