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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Re8 0
3 a5 0
4 Bh6 0
5 Rc8 0
6 Rb8 0
7 Bg7 0
8 Rd8 0
9 e5 0
10 g5 0