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

Book: ∞ / 0

# move proof disproof
1 h6 0
2 f5 0
3 h5 0
4 b6 0
5 e5 0
6 Nc6 0
7 Na6 0
8 a6 0
9 Kd8 0
10 Kf7 0
11 g6 0
12 d6 0
13 a5 0
14 e6 0
15 d5 0
16 g5 0
17 Nh6 0