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

Book: 196 / 1244

# move proof disproof
1 Na6 42 196
2 h6 41 196
3 Nc6 40 196
4 h5 29 196
5 c6 20 196
6 a5 2 196
7 e6 1 196
8 b5 505 197
9 g6 114 197
10 g5 46 197
11 b6 44 197
12 d6 1 197
13 d5 225 198
14 a6 2 199
15 Nf6 19 200
16 Nh6 44 201
17 f6 39 201
18 c5 5 201
19 f5 23 206
20 e5 2 206