CREATE TABLE table_4999 ("Date" TEXT, "City" TEXT, "Opponent" TEXT, "Results\\u00b9" TEXT, "Type of game" TEXT)

When was the game played against Norway with a result of 1:0?
SELECT "Date" FROM table_4999 WHERE "Opponent" = 'norway' AND "Results\u00b9" = '1:0'
SELECT "Date" FROM "table_4999" WHERE "Opponent" = 'norway' AND "Results\u00b9" = '1:0'