NOT KNOWN FACTUAL STATEMENTS ABOUT KAKURO-WORLD

We now have a good deal additional puzzles where by sudoku arrived from.??Every puzzle is made up of a blank grid with sum-clues in different areas. The object is to fill all vacant squares employing quantities 1 to 9 And so the sum of every horizontal block equals the clue on its remaining, plus the sum of each vertical block equals the clue on it