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

Book: 262 / 822

# move proof disproof
1 Ke8 6 262
2 Ng4 174 264
3 Rg8 66 264
4 Ng8 23 264
5 Na6 20 264
6 e6 19 264
7 Kd6 18 264
8 e5 10 264
9 Kc6 7 264
10 g5 88 265
11 a5 19 265
12 Ba6 14 265
13 Bb7 1 265
14 c6 58 266
15 Qe8 49 266
16 Nc6 38 266
17 f5 29 266
18 c5 21 266
19 Nf5 9 267
20 a6 48 268
21 Ke6 6 269
22 g6 23 281
23 f6 76 1236