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

Book: ∞ / 0

# move proof disproof
1 c4 0
2 e5 0
3 a6 0
4 e6 0
5 a5 0
6 Re8 0
7 Rd8 0
8 f5 0
9 Ba6 0
10 Rg8 0
11 h5 0
12 Kd8 0
13 Ke8 0
14 h6 0
15 Ke6 0
16 Bb7 0
17 Kd6 0
18 Kc6 0
19 Rf8 0
20 Nc6 0
21 Na6 0
22 f6 0
23 Kc7 0