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

Book: 69 / 478

# move proof disproof
1 Nc3 1 69
2 Na3 1 69
3 h4 1 69
4 c4 1 69
5 a4 1 69
6 e4 1 69
7 g3 1 69
8 f3 1 69
9 d3 1 69
10 c3 1 69
11 a3 1 69
12 h3 2 71
13 Ba3 1 72
14 f4 1 72
15 Qe2 1 73
16 Qg4 71 93
17 Nf3 43 129
18 b5 50 156
19 Ne2 28 162
20 Ke2 28 163
21 g4 49 204
22 Qh5 33 205
23 Qf3 41 208
24 Kf1 30 230
25 Nh3 27 232
26 d4 34 296
27 Bb2 28 455