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

Book: ∞ / 0

# move proof disproof
1 Nf8 0
2 Ke6 0
3 Re6 0
4 Kc7 0
5 Ng5 0
6 Kd8 0
7 Ke7 0
8 Rf8 0
9 Nf6 0
10 Bb7 0
11 Kd6 0
12 Kc6 0
13 Rd8 0
14 e4 0
15 Rg8 0
16 Re7 0
17 Rh8 0
18 Nc6 0
19 Ra7 0