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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 a6 0
3 Ke8 0
4 Kd8 0
5 Ke7 0
6 Kc6 0
7 Kc7 0
8 Nc6 0
9 Ba6 0
10 Bb7 0
11 Na6 0
12 a5 0
13 Kd6 0
14 Ke6 0