Sudoku

Posted By admin On 12/08/21

Hard Sudoku is characterized by the fact that cells contain much fewer numbers than simple or medium ones. To solve hard level Sudoku puzzles, you should already know some tactics and tricks. Popular methods and techniques for solving hard web Sudoku. Print difficult Sudoku and use different colors and symbols to solve it. Printable Sudoku Puzzles. Try your hand at easy, medium, or hard brainteasers. Crossword tips from Will Shortz. Expert advice from the New York Times puzzle master.

Version 1.3. Initially activate the 'Auto' option for converting single digit pencil marks into regular entries (only for initial setting, not changing the current mode).

Sudoku Evil

Automatically check if the puzzle is correctly solved.

Show numbers of digits yet to be filled.

When highlighting all related cells, highlights follow your cursor movements. (Otherwise follow your clicks.)

Sudoku

Sudoku is a logic puzzle game. The objective is to fill the 9x9 Sudoku grid with digits 1 to 9 such that each of these 9 digits appears in each row, each column and each 3x3 sub-grid once any only once.

Play Sudoku Online

Don't want to solve the same Sudoku puzzles again and again? Now you no longer need to search the web for new puzzles. Billions of free Sudoku puzzles are offered here online. The chance that you play the same Sudoku puzzle is almost zero.

Sudoku Mobile

Play our billions of Sudoku puzzles on your mobile devices such as tablets and smartphones. If you have a large screen phone, try both versions to see which one is a better fit for your device. We also encourage those mouse-only PC players to try our Sudoku Mobile page that has a 'Cell First' option for entering multiple pencil marks in one cell at a time.

Smart Solver

Our new smart solver not only gives the solution for a puzzle, but also explains every step with demonstrations in the grid. You may learn Sudoku solving techniques through examples with numerous puzzles from our database. Try Smart Solver now.

Sudoku Rules

Sudoku website

Web Sudoku Easy 4x4

Sudoku is a number puzzle where the objective is to fill every row, column and box (3x3 grid) with the numbers from 1-9. Each unit (row, column or box) must have each number exactly once. The game starts with a number of fields pre-filled. Your objective is to fill the rest of the fields without breaking the constraints that each number can only be once in each row, column and box.

673924518
895136427
142758693
251489376
984673251
367215849
516892734
429367185
738541962
673924518
895136427
142758693
251489376
984673251
367215849
516892734
429367185
738541962
673924518
895136427
142758693
251489376
984673251
367215849
516892734
429367185
738541962

Sudoku Strategy

The basic gameplay, which will be enough to solve many easy Sudoku puzzles, is simply to look at an empty field and eliminate all numbers that are already present in the row, column and box it belongs to. In many cases this will be enough to find the correct number. And of course as soon as you've found the right number for one field, it will be easier to figure out other fields in the same row, column or box.

When you get into more difficult situations there are a number of different strategies you can use. The excellent page Sudoku Dragon has a good strategy page that covers many basic strategies as well as some advanced ones.

Sudoku Hard

Controls

Web Sudoku Billions Of Free Sudoku Puzzles

You click on the squares you want to put numbers in, and then either click the numbers buttons on the screen, or the number keys on your keyboard to fill them in. If the 'Multinumber' button is pressed then you can put more than one number in each square, it will show as small numbers if there are more than one number in the square. However, in some cases you might want to put just one number in the square and still have it be small, if you think it should be there but are not sure. In that case, hold down the shift key on your keyboard and press the number key, if you do that there will always be a small number in the square, even if there's just one number there.