/home/cms_data/dfault/photos/stories/id/1/7/14617/s_ERRORCaleb Holm and dad Tim Holm play chess at an after-school event last week at the Haines School, held in conjunction with Blue Ribbon School Award activities. The fifth-graders have been learning to play chess, a game that boosts brain power and enhances several cognitive skills, said teacher Jansy Hansen. Matt Davis photo. Matt Davis photo.