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

Book: 165 / 1406

# move proof disproof
1 Na6 840 165
2 Nc6 139 165
3 Nh6 45 165
4 b6 42 165
5 g5 26 165
6 e5 26 165
7 h6 22 165
8 c6 22 165
9 a6 20 165
10 Nf6 24 166
11 b5 5 166
12 a5 1 166
13 h5 21 167
14 g6 46 170
15 e6 30 173
16 c5 55 176
17 f6 20 177
18 d5 1 179
19 f5 20 180
20 d6 1 187