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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Re8 0
3 Rc8 0
4 Rg8 0
5 e6 0
6 c6 0
7 c5 0
8 h5 0
9 e5 0
10 Rh7 0
11 Rd8 0
12 Ne6 0
13 g5 0
14 Rb8 0
15 a5 0
16 Ng6 0
17 Nd7 0
18 g6 0
19 Nh7 0