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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Nc6 0
3 Na6 0
4 Kd6 0
5 a6 0
6 Ba6 0
7 Kc7 0
8 Kd8 0
9 Ke8 0
10 Kc6 0
11 Bb7 0
12 g5 0
13 h6 0
14 h5 0
15 e6 0
16 Re8 0
17 Rf8 0
18 Rg8 0
19 e5 0
20 Ke6 0
21 Rd8 0