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

Book: ∞ / 0

# move proof disproof
1 Rf8 0
2 a5 0
3 c5 0
4 Ne6 0
5 Bf8 0
6 Bg7 0
7 Re8 0
8 Ba6 0
9 Kd6 0
10 Na6 0
11 Bb7 0
12 Nf7 0
13 Ke8 0
14 e5 0
15 Kc7 0
16 Ke6 0
17 e6 0
18 a6 0
19 Rg8 0
20 Nb7 0