Tuhia he tohutoro mō tēnei wāhanga - I te tau 1992 i toa ia i te Swedish Chess Championship. I wikitoria a Karlsson i nga mētara hiriwa i te whakataetae a motu e rua (1979, 1986) me te mētara parahi kotahi (1976). I te tau 1982 i Las Palmas i uru ia ki te Whakataetae Whakataetae o te Ao o te Ao
I eke ki te tūranga tekau mā tahi.