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

Book: 22 / 221

# move proof disproof
1 Nf3 31 22
2 g4 27 29
3 Qh5 3 29
4 Qa4 2 29
5 Ne4 1 29
6 Qg4 37 30
7 Nd5 3 30
8 Qf3 2 30
9 c5 1 37
10 a3 1 39
11 b3 1 39
12 d3 1 39
13 f3 1 39
14 g3 1 39
15 e4 1 39
16 a4 1 39
17 f4 1 39
18 h4 1 39
19 Nh3 1 39
20 Nb1 1 39
21 Rb1 1 39
22 Qe2 1 39
23 Kf1 1 39
24 Ke2 31 40
25 Nge2 30 40
26 Nce2 25 40
27 Qc2 1 41
28 Nb5 1 41
29 b4 1 43
30 d4 1 43
31 Na4 1 43
32 Qb3 1 46
33 h3 8 47