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

Book: ∞ / 0

# move proof disproof
1 d6 0
2 Ng4 0
3 a5 0
4 Nf5 0
5 Nf7 0
6 a6 0
7 d5 0
8 Ng8 0
9 Nc6 0
10 Na6 0