Kakuro

[3x3] [4x4] [5x5] [9x8] [13x13] [15x15] [20x20] [15x30] [25x25] [30x30]

Rules of the game

• all empty squares must be filled with numbers ranging from 1 to 9.
• the sum of each horizontal block should be equal with the clue on its left.
• the sum of each vertical block should be equal with the clue on its top.
• no number may be used in the same block more than once.
• every puzzle has one unique solution.