Chess: Carlsen loses hard-won rating points in a single Oslo club match

The world champion missed a one-move win and halved against an opponent with whom he had already drawn as a nine-year-old Magnus Carlsen's vintage performance at Wijk aan Zee gained the world champion three rating points in his quest for a world record 2900. A week later the Norwegian, 31, gave them all back with interest on a Saturday night in Oslo to Tallaksen Ostmoe, rated 399 points lower than the No 1. The very first meeting 22 years earlier between the then nine-year-old Carlsen, rated und...