Standard 4x4 sudoku: The digits 1 through 4 appear in every row, column, and 2x2 box without repetition.
Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage.
Little Killers: Clues outside the grid are the sum of the digits along the indicated diagonal. Digits may repeat if allowed by other rules.
Play the puzzle in SudokuPad.
Solution code: Column 3 from top to bottom.
on 14. June 2026, 21:10 by dleclair
Sneaky clever logic. Well done!