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

Book: 39 / 546

# move proof disproof
1 Kf1 29 39
2 Qa4 27 40
3 h4 25 40
4 Nh3 29 41
5 f4 26 41
6 e4 1 41
7 g4 1 41
8 Nf3 1 41
9 Qc2 1 41
10 Nc3 31 43
11 d3 29 43
12 a4 27 43
13 Na3 27 43
14 Kf3 27 43
15 c5 26 43
16 a3 26 43
17 b3 26 43
18 g3 26 43
19 h3 26 43
20 f3 25 43
21 Qe1 24 43
22 Qf1 24 43
23 Qb3 1 43
24 b4 1 43
25 d4 1 43
26 Kd3 31 59
27 Ke1 28 59