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

Book: ∞ / 0

# move proof disproof
1 e4 0
2 c6 0
3 c5 0
4 Ba6 0
5 Kc6 0
6 Kd6 0
7 Na6 0
8 Nf6 0
9 Nh6 0
10 Nc6 0
11 a5 0
12 Ke6 0
13 a6 0
14 Ne7 0
15 Bb7 0
16 Ke8 0
17 Kd8 0
18 Ke7 0