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

Book: ∞ / 0

# move proof disproof
1 Rg8 0
2 f6 0
3 Ng5 0
4 b4 0
5 Nf6 0
6 Bb7 0
7 f5 0
8 g6 0
9 c6 0
10 c5 0
11 Nc6 0
12 g5 0
13 Na6 0
14 e5 0
15 Ba6 0
16 d5 0
17 e6 0
18 d6 0