Killer sudoku. Fill the grid so every row, column, and 3×3 box holds the digits 1 to 9, using only the cage totals: no digit is printed to start you off.
Cages is a free daily killer sudoku from Mind Loft. Killer sudoku takes the printed clues away and replaces them with arithmetic: the 81 squares are divided into dashed cages, each labelled with the total of the digits inside it, and no digit repeats within a cage. Fill the grid so that every row, every column, and every 3×3 box holds the digits 1 through 9 exactly once. The board starts completely empty, and there is always a single, logical solution — no guessing required.
Play it your way: tap a square and a number, pencil in candidates with Notes when a square could go two ways, and lean on the arrow keys and number row on a desktop keyboard. Wrong entries are never flagged, so spotting your own slips is part of the puzzle, and a clean solve earns a perfect score.
A new puzzle drops every day at midnight Eastern, and Sundays step up to a harder Edition with fewer, bigger cages. No app, no signup — play free in your browser, keep a streak, and race the daily leaderboard. The other two sudokus: Cages, the classic 9×9, and Quilt, the jigsaw one with the boxes redrawn.