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

Book: ∞ / 0

# move proof disproof
1 Nf5 0
2 d5 0
3 f6 0
4 Nc5 0
5 d6 0
6 Nb8 0
7 Nc7 0
8 Ng8 0
9 e6 0
10 Bg7 0
11 b6 0
12 Nb4 0
13 Kd8 0
14 Rb8 0
15 b4 0
16 e5 0
17 f5 0