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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Nf6 0
3 Ng5 0
4 a5 0
5 Rg8 0
6 Bb7 0
7 Kd6 0
8 Nc6 0
9 a6 0
10 Ba6 0
11 Ke6 0
12 Kc6 0
13 Ke7 0
14 Kd8 0
15 Ke8 0
16 c6 0
17 f6 0
18 Nf8 0
19 Na6 0
20 Rf8 0
21 Rd8 0
22 Re8 0
23 c5 0