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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 Bf8 0
3 Rg8 0
4 Nf8 0
5 g4 0
6 Bb7 0
7 Ke6 0
8 Bg7 0
9 a6 0
10 Na6 0
11 Nc6 0
12 Re8 0
13 Rd8 0
14 Rf8 0
15 a5 0
16 e5 0
17 e6 0
18 Kc6 0
19 Ba6 0
20 Kc7 0
21 Kd8 0
22 Ke8 0
23 Kd6 0