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

Book: ∞ / 0

# move proof disproof
1 Bb7 0
2 Rc7 0
3 Ke6 0
4 a5 0
5 Kd8 0
6 Ke8 0
7 Ra8 0
8 e5 0
9 Kd6 0
10 e6 0
11 Kc7 0
12 Rb7 0
13 c5 0