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

Book: ∞ / 0

# move proof disproof
1 Bf8 0
2 d5 0
3 Nf6 0
4 e5 0
5 e6 0
6 Ba6 0
7 d6 0
8 Bb7 0
9 a6 0
10 Bg7 0
11 Rb8 0
12 g4 0
13 a5 0