Kakuro vs. Sudoku

Kakuronoun

(games) A type of number puzzle, similar to a crossword but with numbers. Each "clue" is the sum of the digits to be placed in its group of squares, and no digit can be repeated within a group.

Kakuro

Kakuro or Kakkuro or Kakoro (Japanese: カックロ) is a kind of logic puzzle that is often referred to as a mathematical transliteration of the crossword. Kakuro puzzles are regular features in many math-and-logic puzzle publications across the world.

Sudokunoun

A type of puzzle whose completion requires each of typically nine rows and columns and each of as many usually square subregions to contain, without duplication, the digits from 1 to 9 (or the grid dimension).

Sudoku

Sudoku (数独, sūdoku, digit-single) (, , , originally called Number Place) is a logic-based, combinatorial number-placement puzzle. In classic sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called , , or ) contains all of the digits from 1 to 9.