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

Book: ∞ / 0

# move proof disproof
1 Ra7 0
2 Ke6 0
3 e5 0
4 e6 0
5 Ke8 0
6 Kd8 0
7 Kc7 0
8 Kd6 0
9 a5 0
10 Bb7 0
11 c5 0