ADDoku Online by Lovatts

ADDoku is a Sudoku and Kakuro crossbreed that's twice the fun! Try Lovatts online version when you're finished, click over to YouPlay.com for an even greater variety of fun and free Lovatts online puzzles and games - updated daily!

Instructions

In the Addoku, as for Sudoku, every row, column and 3x3 block must contain the numerals 1-9. The difference is that you’re not given numbers to start you off.

The numbers that occur in the squares linked by a shaded line add up to the total given in the top left-hand corner of each set. No number is repeated in any of these sets. Use these totals to find the right numbers to solve the puzzle.

Click up from 1 to 9 or back from 9 to 1 and note possible numbers at the bottom of each square. When you complete each set it’s shaded in so you know you’re right!

Addoku puzzles are also called Sumdoku, Killer Sudoku or even Samunamupure puzzles. And you get to play the best online version here!