CREATE TABLE table_14903999_1 (womens_doubles VARCHAR(255), year VARCHAR(255), mixed_doubles VARCHAR(255), womens_singles VARCHAR(255))
Who won womens doubles the year magnús ingi helgason tinna helgadóttir won mixed doubles and ragna ingólfsdóttir won womens singles in 2010
    
SQL: SELECT womens_doubles FROM table_14903999_1 WHERE mixed_doubles = "Magnús Ingi Helgason Tinna Helgadóttir" AND womens_singles = "Ragna Ingólfsdóttir" AND year = 2010