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

Book: ∞ / 0

# move proof disproof
1 Rd7 0
2 Bg7 0
3 Ra8 0
4 Nh6 0
5 h6 0
6 Nf6 0
7 Rc7 0
8 Rb7 0
9 Bh6 0