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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Nh6 0
3 Kd6 0
4 Kc7 0
5 Kd8 0
6 a5 0
7 Na6 0
8 e6 0
9 Ke6 0
10 a6 0
11 Bh6 0
12 e5 0
13 Bg7 0
14 Bb7 0
15 c5 0
16 Ke8 0
17 Ba6 0