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

Book: ∞ / 0

# move proof disproof
1 h4 0
2 Nc6 0
3 Na6 0
4 d5 0
5 a6 0
6 Ba6 0
7 Bg7 0
8 f6 0
9 d6 0
10 e5 0
11 e6 0
12 Bh6 0
13 f5 0
14 Bb7 0
15 c5 0
16 c6 0
17 a5 0