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

Book: ∞ / 0

# move proof disproof
1 Ke6 0
2 f5 0
3 Ke8 0
4 a5 0
5 e5 0
6 Rg8 0
7 Nc6 0
8 Ng5 0
9 e6 0
10 Na6 0
11 Ba6 0
12 Kd6 0
13 c5 0
14 Bb7 0
15 a6 0
16 Bh6 0
17 Kc6 0
18 Bg7 0
19 c6 0
20 Qe8 0