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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Ba6 0
3 h5 0
4 f6 0
5 Bg7 0
6 f5 0
7 e5 0
8 c5 0
9 c6 0
10 Bb7 0
11 d6 0
12 d5 0
13 a5 0
14 e6 0
15 Nc6 0
16 Na6 0