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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 a6 0
3 d6 0
4 h6 0
5 d5 0
6 Rd8 0
7 Re8 0
8 Bb7 0
9 Ba6 0
10 Rb8 0
11 Rf8 0
12 Rg8 0
13 e5 0
14 h4 0