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

Book: ∞ / 0

# move proof disproof
1 a4 0
2 e5 0
3 Nd7 0
4 Na6 0
5 Nc6 0
6 h5 0
7 c6 0
8 c5 0
9 Kf7 0
10 h6 0
11 Kh6 0
12 Kg6 0
13 f5 0
14 Nh6 0
15 a6 0
16 e6 0