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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 a6 0
3 Nf6 0
4 h6 0
5 Bg7 0
6 d5 0
7 Kf7 0
8 h5 0
9 e6 0
10 d6 0
11 Bh6 0
12 g5 0
13 Nh6 0
14 e5 0
15 Kd8 0
16 Na6 0
17 Nc6 0