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

Book: ∞ / 0

# move proof disproof
1 e4 0
2 Bb7 0
3 Nh6 0
4 Nf6 0
5 Kd6 0
6 Kc6 0
7 Ne7 0
8 a6 0
9 a5 0
10 Na6 0
11 Nc6 0
12 Kc7 0
13 Ke7 0
14 Kd8 0
15 Ke8 0
16 c4 0
17 Ba6 0
18 Ke6 0