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

Book: ∞ / 0

# move proof disproof
1 d5 0
2 a5 0
3 f6 0
4 Rh7 0
5 Rc8 0
6 f5 0
7 Kd8 0
8 Rd8 0
9 g5 0
10 g6 0
11 d6 0
12 b6 0
13 h5 0
14 e5 0
15 e6 0
16 Ra8 0
17 Nf6 0