NumbersLogicPuzzle Round

Sudoku (Puzzle Round)

Daily Sudoku in three sizes: 4x4, 6x6 and 9x9.

Every day: Three daily Sudoku grids, the same for every player: Mini (4x4), Medium (6x6) and Classic (9x9), each with one unique solution and its own daily leaderboard. New puzzle: Midnight UTC.

Play Sudoku (Puzzle Round) on puzzleround.com
Classic Sudoku on Puzzle Round: a 9x9 grid with 30 of 81 cells filled as teal clues and a row of number buttons

Puzzle Round runs three daily Sudoku grids: a 4x4 Mini, a 6x6 Medium and a 9x9 Classic. Each has one unique solution, the same grid for everyone, and its own leaderboard ranked by time.

About Sudoku (Puzzle Round)

Puzzle Round's Sudoku comes in three sizes, each a separate daily game with its own page and leaderboard. Mini Sudoku is a 4x4 grid using 1 to 4 with 2x2 boxes, a warm-up of a minute or so. Medium Sudoku is a 6x6 grid using 1 to 6 with 2x3 boxes. Classic Sudoku is the familiar 9x9 grid using 1 to 9 with 3x3 boxes.

The rules are the same in all three: fill every empty cell so each number appears once per row, once per column and once in each outlined box. Fixed clues are shown in teal, your selected number is highlighted in violet, and a number repeated in a line or box turns red. Select a cell and use the number buttons or the keyboard; choosing the same number again clears it. Each generated grid has exactly one solution.

The three sizes make a ladder: the Mini for a quick start, the Medium for a short session, the Classic for a full one. Puzzle Round also has an article on the history of Sudoku and Number Place.

Puzzle Round is a free website of short daily puzzles by thatsoftwaredude, an independent developer. Every player gets the same puzzles each day, a countdown on the site runs to the next midnight UTC, and each game keeps its own daily leaderboard ranked by solve time. You can play without signing up; a free account saves your result to the leaderboard and keeps your streak, and private Circles let a family or a group of friends compare results. Clearing the whole lineup in a day counts as a Perfect Day.

How to play Sudoku (Puzzle Round)

  1. Open puzzleround.com and choose Mini (4x4), Medium (6x6) or Classic (9x9) Sudoku.
  2. Select an empty cell.
  3. Enter a number with the buttons or keyboard; enter it again to clear.
  4. Use each number once per row, column and box; repeats turn red.
  5. Fill the grid to stop the clock and see that size's daily leaderboard.

Tips

  • Start with the Mini to warm up, then move up a size.
  • Scan each box for the one cell a number can still go.
  • In the 6x6, remember the boxes are two rows by three columns.
  • Red marks a repeat at once, so fix it before it spreads.

Questions

What sizes of Sudoku does Puzzle Round have?

Three: Mini Sudoku (4x4), Medium Sudoku (6x6) and Classic Sudoku (9x9), each new every day.

Does each Puzzle Round Sudoku have one solution?

Yes. Each generated grid has exactly one solution.

When does a new Sudoku puzzle come out?

Once a day at midnight UTC. The site shows a countdown to the next puzzle, and everyone plays the same one that day.

Is Sudoku free?

Yes. Puzzle Round is free to play in the browser (its terms mention optional ads). You can solve without an account; a free account puts your time on the daily leaderboard and keeps your streak.

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