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

Book: ∞ / 0

# move proof disproof
1 e3 0
2 Na6 0
3 c5 0
4 f4 0
5 a6 0
6 c6 0
7 Nc6 0
8 Kc6 0
9 Bb7 0
10 a5 0
11 Ba6 0
12 Ke6 0
13 Ke8 0
14 Kd8 0
15 Ke7 0
16 Kd6 0