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

Book: ∞ / 0

# move proof disproof
1 Nf8 0
2 Kf5 0
3 Nf6 0
4 Rg8 0
5 Ke7 0
6 Rh8 0
7 Rc8 0
8 Na6 0
9 Nd7 0
10 Re7 0
11 Ke5 0
12 Rd8 0
13 a6 0
14 Nc6 0
15 Rf8 0
16 Kf7 0
17 Kd7 0
18 Kf6 0
19 Kd6 0
20 Kd5 0