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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 Ra8 0
3 Rd8 0
4 Rf8 0
5 Bb7 0
6 d6 0
7 d5 0
8 Rg8 0
9 Re8 0
10 h5 0
11 Rb7 0
12 Rc7 0