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

Book: ∞ / 0

# move proof disproof
1 Nf8 0
2 d5 0
3 Rf8 0
4 Nf6 0
5 d6 0
6 g5 0
7 Rb8 0
8 a6 0
9 Rg8 0
10 Rd8 0
11 g6 0
12 e4 0
13 Re8 0
14 Ng5 0
15 Bb7 0
16 Ba6 0
17 a5 0