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

Book: 118 / 1539

# move proof disproof
1 Qg4 633 118
2 Qf3 46 154
3 Qh5 85 167
4 c4 47 186
5 e4 44 208
6 Ke2 51 213
7 Rf1 46 221
8 Nc3 36 225
9 Qe2 39 238
10 Rg1 29 244
11 h4 40 248
12 Na3 43 256
13 b3 37 270
14 g3 37 275
15 d3 32 282
16 Kf1 35 284
17 a4 34 289
18 g4 48 293
19 a3 37 294
20 c3 39 310
21 b4 27 373
22 h3 28 402
23 d4 24 580
24 f3 22 743
25 f4 0