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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Ke6 0
3 Kc6 0
4 Ba6 0
5 c5 0
6 e6 0
7 c6 0
8 a6 0
9 Qe8 0
10 g6 0
11 e5 0
12 Nc6 0
13 Na6 0
14 Bb7 0
15 g5 0
16 Kd6 0
17 Nh6 0
18 Ke8 0
19 f5 0