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

Book: ∞ / 0

# move proof disproof
1 Bb7 0
2 Nf6 0
3 a6 0
4 Ba6 0
5 a5 0
6 Na6 0
7 Kc7 0
8 Ke8 0
9 Kd8 0
10 Bg7 0
11 Kc6 0
12 Kd6 0
13 f5 0
14 e5 0
15 e6 0
16 f6 0
17 Ke6 0
18 Nc6 0
19 Bh6 0
20 Nh6 0