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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 Qc7 0
3 Qa5 0
4 Qb6 0
5 b6 0
6 f6 0
7 Nf6 0
8 d5 0
9 f5 0
10 e6 0
11 e5 0
12 Nh6 0
13 Bg7 0
14 Bh6 0
15 Na6 0
16 d6 0
17 Nc6 0
18 a6 0
19 a5 0