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

Book: ∞ / 0

# move proof disproof
1 Rd8 0
2 Ng6 0
3 Nd7 0
4 g6 0
5 h6 0
6 Re8 0
7 Rh8 0
8 h5 0
9 a6 0
10 Rc8 0
11 a5 0
12 Rb8 0
13 c5 0
14 g5 0