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

Book: ∞ / 0

# move proof disproof
1 e3 0
2 Rd8 0
3 a5 0
4 g4 0
5 Bg7 0
6 Rg8 0
7 Rb8 0
8 e5 0
9 Kb8 0
10 Kc7 0
11 Kb7 0
12 Kd7 0
13 Kd8 0
14 Nf8 0
15 Bf8 0
16 a6 0
17 Nf6 0
18 Rf8 0
19 Re8 0
20 e6 0
21 c4 0