SUPER SUDOKU

NO.837

Test your mental agility with our challenging giant Sudoku and you could win a €15 book token.

Send your solution to: Sudoku No. 837 The Irish Mail on Sunday, PO Box 5332, Cardiff Lane, Dublin 2. Include your name and full address. The winner of Super Sudoku

No. 836 is Bernard McCarthy, of Greystones, Co. Wicklow.