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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Nh6 0
3 d5 0
4 d6 0
5 Nf6 0
6 Bh6 0
7 Kf7 0
8 h6 0
9 Bg7 0
10 Bb7 0
11 e6 0
12 Ba6 0
13 Kd8 0
14 Rb8 0
15 e5 0
16 h5 0