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

Book: ∞ / 0

# move proof disproof
1 Nc7 0
2 Nb8 0
3 Nb4 0
4 Kc6 0
5 Kc7 0
6 Ke7 0
7 Kd8 0
8 Ke8 0
9 Kd6 0
10 Bb7 0
11 Ke6 0