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

Book: 262 / 767

# move proof disproof
1 Nb8 6 262
2 Nf6 4 262
3 Ng4 186 263
4 g5 80 263
5 Rg8 66 263
6 c6 63 263
7 a6 52 263
8 f6 49 263
9 Ne5 40 263
10 c5 25 263
11 a5 22 263
12 Ba6 17 263
13 Nf5 11 263
14 Rb8 7 263
15 Nb6 6 263
16 f5 34 264
17 e5 16 264
18 Ng8 22 265
19 Bb7 1 265
20 Nc5 9 274
21 e6 29 276
22 g6 22 281