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

Book: ∞ / 0

# move proof disproof
1 e4 0
2 c5 0
3 a6 0
4 Ke8 0
5 Kd8 0
6 Ke7 0
7 Kc7 0
8 Kd6 0
9 Na6 0
10 f6 0
11 f5 0
12 Ke6 0
13 Bb7 0
14 a5 0
15 Ba6 0