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

Book: ∞ / 0

# move proof disproof
1 b3 0
2 a5 0
3 Nh6 0
4 c6 0
5 a6 0
6 Na6 0
7 Nc6 0
8 Kf7 0
9 c5 0
10 Bb7 0
11 e5 0
12 e6 0
13 g5 0
14 Ba6 0
15 d5 0
16 g6 0
17 h5 0
18 h6 0
19 d6 0
20 Nf6 0