About chess lessons for intermediate results of 10,000
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27:25
27:06
04:55
27:50
23:13
04:41
10:15
09:44
01:44
265:56
06:13
21:33
12:12
30:47
35:28
14:53
06:05
17:35
00:48
10:10
11:59
22:15
11:06
01:48
20:40
11:03
17:13
05:54
26:50
10:13
01:51
12:59
03:51
01:19
16:18
271:18
19:23
06:51
10:16
01:37
10:48
06:31
12:50
10:50
16:55