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

Book: ∞ / 0

# move proof disproof
1 Re8 0
2 a6 0
3 h6 0
4 Bh6 0
5 g4 0
6 Bg7 0
7 Nf6 0
8 Nh6 0
9 Rb8 0
10 Rd8 0
11 Rc8 0
12 a5 0