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

Book: 60 / 113

# move proof disproof
1 Na3 3 60
2 h4 2 60
3 f3 2 60
4 Nf3 1 60
5 Ke2 1 60
6 Ne2 1 60
7 Ba3 1 60
8 e4 1 60
9 g4 23 61
10 Qf3 13 61
11 Qh5 6 61
12 c3 4 61
13 a4 4 61
14 Nc3 4 61
15 f4 4 61
16 a3 3 61
17 Qe2 3 61
18 c4 3 61
19 d3 3 61
20 d4 1 61
21 Qg4 1 61
22 g3 8 63
23 Rh2 8 63
24 Kf1 7 63
25 b4 2 69
26 Bb2 4 73