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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 Rg8 0
3 Nc6 0
4 Bg7 0
5 Ba6 0
6 Na6 0
7 Kd6 0
8 Bf8 0
9 a6 0
10 Re8 0
11 Rf8 0
12 Rd8 0
13 Nf8 0
14 Ke6 0
15 a5 0
16 f5 0
17 f6 0
18 Ke8 0
19 Kd8 0
20 Kc7 0
21 Kc6 0
22 Nf6 0
23 e6 0
24 Bb7 0
25 c4 0