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

Book: ∞ / 0

# move proof disproof
1 Kd6 0
2 Kc7 0
3 Kd8 0
4 a5 0
5 Bb7 0
6 Ke6 0
7 f6 0
8 Ke8 0
9 Ba6 0
10 Na6 0
11 Bg7 0
12 e6 0
13 a6 0
14 f5 0
15 e5 0
16 Bh6 0
17 Nf6 0
18 Ng5 0
19 Rg8 0
20 c5 0