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

Book: ∞ / 0

# move proof disproof
1 b3 0
2 Na6 0
3 Nf6 0
4 Nc6 0
5 c6 0
6 h5 0
7 g6 0
8 b6 0
9 h6 0
10 c5 0
11 e6 0
12 d5 0
13 d6 0
14 g5 0
15 e5 0
16 Nh6 0
17 Kf7 0
18 b5 0