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

Book: ∞ / 0

# move proof disproof
1 e5 0
2 e6 0
3 d6 0
4 Nf6 0
5 Bb7 0
6 g4 0
7 Rb8 0
8 Rh7 0
9 a6 0
10 Bg7 0
11 Ba6 0
12 a5 0
13 d5 0