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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 h5 0
3 f5 0
4 d5 0
5 b5 0
6 b6 0
7 h6 0
8 f6 0
9 Rb8 0
10 Kd8 0
11 e6 0
12 e5 0
13 Bg7 0
14 Bh6 0
15 Nc5 0
16 d6 0
17 Nb8 0
18 Nc7 0
19 Nb4 0
20 Nh6 0