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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 Kf6 0
3 c4 0
4 Kd7 0
5 Ke6 0
6 Bh6 0
7 Kd6 0
8 Na6 0
9 Nc6 0
10 Nd7 0
11 a5 0
12 Bg7 0
13 a6 0
14 Kf7 0
15 Kd8 0
16 Ke8 0
17 Rg8 0