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

Book: ∞ / 0

# move proof disproof
1 Ke6 0
2 a6 0
3 g6 0
4 Kc6 0
5 Kc7 0
6 e5 0
7 Bb7 0
8 Kd6 0
9 Ng5 0
10 Nf6 0
11 e6 0
12 Ba6 0
13 Ke8 0
14 Kd8 0
15 Nc6 0
16 Na6 0
17 a5 0
18 g5 0