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

Book: ∞ / 0

# move proof disproof
1 Rh7 0
2 Rhh8 0
3 Rb8 0
4 e6 0
5 Rc8 0
6 h4 0
7 c5 0
8 a6 0
9 Rah8 0
10 Rg8 0
11 Rg6 0
12 Re8 0
13 f5 0
14 Rf8 0
15 a5 0
16 Rd8 0
17 e5 0