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

Book: ∞ / 0

# move proof disproof
1 d6 0
2 e5 0
3 d5 0
4 Rf8 0
5 a6 0
6 Ra8 0
7 Re8 0
8 a5 0
9 h4 0
10 Rc8 0
11 e6 0
12 Rh8 0
13 Rb7 0
14 Rd8 0
15 Rg8 0