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

Book: 87 / 1498

# move proof disproof
1 Qg4 245 87
2 c5 50 105
3 g4 78 108
4 Nf3 72 125
5 Nh3 57 129
6 Qb3 22 149
7 Qa4 66 151
8 f4 53 154
9 Qh5 43 154
10 Nc3 33 158
11 h4 53 176
12 g3 49 179
13 b3 51 180
14 Qe2 48 180
15 Na3 51 182
16 Kf1 48 184
17 Ke2 53 195
18 d3 56 196
19 Ne2 53 223
20 b4 29 225
21 a4 51 227
22 Qf3 49 231
23 a3 49 247
24 e4 28 270
25 Qc2 24 281
26 d4 27 295
27 h3 36 393
28 f3 24 478