About chess instruction results of 1,433
27:13 30:28 33:42 28:28 29:43 31:08 28:02 29:38 27:16 34:15 28:26 30:25 30:43 28:38 50:36 64:17 63:19 75:44 82:56 132:26 33:07 30:48 30:27 59:23 21:04 32:30 34:16 39:34 21:31 43:27 28:56 94:14 43:37 27:22 37:24 42:20 30:54 71:49 95:01 34:46 25:13 39:18 48:55 44:15 32:26 55:12