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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 f5 0
3 Nh6 0
4 a6 0
5 e6 0
6 Ke6 0
7 a5 0
8 Ke8 0
9 Kd8 0
10 Kd6 0
11 Kc7 0
12 Na6 0
13 Nc6 0
14 Bb7 0
15 Ba6 0
16 Kc6 0