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

Book: ∞ / 0

# move proof disproof
1 Nf5 0
2 d5 0
3 Bb7 0
4 Nd5 0
5 Ng6 0
6 a6 0
7 d6 0
8 Ng8 0
9 Nc6 0
10 h5 0
11 Ba6 0
12 Rb8 0