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

Book: ∞ / 0

# move proof disproof
1 Ng4 0
2 a6 0
3 Re8 0
4 Rd8 0
5 Nf5 0
6 Rb8 0
7 f5 0
8 f6 0
9 Ng8 0
10 Kd6 0
11 a5 0
12 Bg7 0
13 Kc7 0
14 Ke8 0
15 e6 0
16 Kc8 0
17 c5 0
18 Kd8 0
19 Ke6 0
20 Rc8 0