Mind LoftSudoku · Edge clue sudokus
TodayQuizzes

Free killer, sandwich, frame and outside sudoku

Free Daily Killer, Sandwich, Frame, Outside and Skyscraper Sudoku

Five sudokus that print their clues on the cages or in the gutters and leave the grid to you. Cages is killer sudoku. Sando is sandwich sudoku. Frame and Rim are the two gutter sudokus, one giving the sum of the first three digits from each edge and the other giving nothing inside the grid at all. Towers is skyscrapers, where the edge clue is how many buildings you can see.

Play today's Cages Run the Sudoku circuit
5games
1new board a day, each
0signups needed

Pick a puzzle

5
CagesKiller sudokuThe daily killer sudokuKiller sudoku: not one digit is printed. The grid is cut into cages labeled with the total of the digits inside them, and those totals are the whole clue set.Today's board1 2 3 PlaySandoSandwich sudokuThe daily sandwich sudokuSandwich sudoku: the number beside each row and column is the total of the digits lying between that line’s 1 and its 9. Find those two and the grid falls out.Today's board1 2 3 PlayFrameFrame sudokuThe daily frame sudokuAn ordinary sudoku plus a number outside every row and column end: the total of the first three squares reading in from that edge. Thirty-six sums, every one printed, and far fewer digits inside the grid than a sudoku usually needs.Today's board1 2 3 PlayRimOutside sudokuThe daily outside sudokuA sudoku with nothing printed inside the grid. Outside some row and column ends, the three digits of the first three squares from that edge are printed, in no order. The blank gutters are the puzzle.Today's board1 2 3 PlayTowersSkyscrapersCount the towers in viewSkyscrapers: every row and column holds each tower height once, and each border clue counts the towers visible from there, taller ones hiding shorter ones. 5x5 weekdays, 7x7 Sundays, nothing counted against you, the clock decides the day.Today's board1 2 3 Play

How the edge clue sudokus play

The sudoku rule still holds in all five: each digit once per row, column and box. What changes is where the information comes from. Cages adds cage totals with no repeats inside a cage. Sando gives, for each row and column, the sum of the digits between the 1 and the 9. Frame prints the sum of the first three digits from each edge. Rim is Frame with nothing printed inside. Towers is not a sudoku at all but a skyscraper puzzle: digits are heights, and the edge clue counts how many you can see.

Questions

Which is the gentlest?

Cages, if you have done a killer sudoku before; the arithmetic is small and the cages do a lot of the work. Rim is the hardest of the five because it starts with an empty grid.

Are they free?

All five, every day, no account required.