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

Book: 21 / 325

# move proof disproof
1 h4 1 21
2 f4 1 21
3 d4 1 21
4 b4 1 21
5 a4 1 21
6 g3 1 21
7 f3 1 21
8 d3 1 21
9 b3 1 21
10 a3 1 21
11 Nf3 1 21
12 e5 276 22
13 Qg4 21 22
14 g4 2 22
15 Qf3 1 22
16 Qh5 1 22
17 Qb3 1 23
18 Qa4 1 23
19 Qe2 1 24
20 c5 1 37
21 Ne2 1 38
22 Qc2 1 38
23 Ke2 1 38
24 Na3 1 39
25 Nc3 1 39
26 Nh3 1 39
27 Kf1 1 39
28 h3 2 57