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

Book: ∞ / 0

# move proof disproof
1 Rf8 0
2 Re8 0
3 Nf6 0
4 Kc6 0
5 Kd6 0
6 Rd8 0
7 Rg8 0
8 Na6 0
9 Kc7 0
10 Nc6 0
11 a6 0
12 Bb7 0
13 Ba6 0
14 Nf8 0
15 Ke7 0
16 Kd8 0
17 Ke8 0
18 a5 0
19 Ke6 0