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

Book: ∞ / 0

# move proof disproof
1 c6 0
2 Rd8 0
3 Re7 0
4 Nd7 0
5 Rd7 0
6 a5 0
7 a6 0
8 Rf7 0
9 Rb8 0
10 g5 0
11 Rh7 0
12 c5 0
13 h5 0
14 Nh7 0
15 Rc8 0
16 Rg8 0
17 Re8 0