Irregular sudoku - jigsaw sudoku - to print
60,000 irregular jigsaw sudoku to choose from


Irregular sudoku puzzle Our irregular Sudoku puzzles are 9 X 9 sudoku. Instead of having nine 3 X 3 square areas, these 9 areas are irregular shapes. The rules are the same as for a classic sudoku. You need to find by deduction nine different digits by row, column and area.

You have 60,000 puzzles presented in two forms and three levels.
 Forms: Symmetrical or asymmetrical.
 Levels: beginner, confirmed, expert.

Each of our puzzles has only one solution. All our puzzles are solvable by a sequence of logical reasoning. No multiple choice or unfounded hypothesis is necessary to reach any solution.

To distinguish better between areas, there are four types of print:
  *   White background.
  *   Hatched background.
  *   Shaded background.
  *   Colored background.


Printing a puzzle at random: 
Backgrounds:  Print button grid
Levels: 
Forms: Symmetric      Asymmetric 

Select a puzzle or a solution: 
Backgrounds:  Print button grid
Levels: 
Number:    (From 1 to 10,000)
Forms:  Symmetric      Asymmetric 
Grids:  Puzzle           Solution 


Download in PDF format:

Many browsers cause problems because they fail to print the colored or shaded background, or because they print borders that do not correspond exactly to the screen display.
In this case you can download our grids as PDF files and then print them. You will get a faithful presentation of our irregular sudoku grids.

Our PDF are in color. You can print in color or gray according to the options of your printer.

Download a PDF grid at random: 
Levels:  Button pdf
Forms:  Symmetric      Asymmetric 

Download a selected PDF grid: 
Levels:  Button pdf
Number:    (From 1 to 10,000)
Forms:  Symmetric      Asymmetric 

Directions:

All irregular jigsaw sudoku on this site have solutions available for printing. They are all created by en.top-sudoku.com .

Choice of puzzles: Our irregular sudoku were designed and graded so that at the same level the higher the puzzle number, the more difficult the solution, with this nuance that in our classification, at equal levels and numbers, symmetrical puzzles are a little easier to solve than asymmetrical ones. Indeed, the symmetrical ones have an additional constraint - precisely to be symmetrical - so they have fewer empty squares to solve. Also note that the aspect of difficulty is subjective, because different solving techniques suit different people.

Why play irregular sudoku? Irregular sudoku is a variation of sudoku. It allows veterans of sudoku to find new visual configurations. The beginner and confirmed levels are solvable by logical deduction. Only the expert level requires you to pencil in the candidates if you cannot see the solution.


Levels to print:

• Puzzles "Beginner" are fully resolvable by "Inclusion" while accepting other methods.
• Puzzles "Confirmed" are fully resolvable by "Inclusion" and "Exclusion" while admitting to other methods.
• Puzzles "Expert" are solvable by "Inclusion", "Exclusion" and "Pairs exclusive".
For more details on these three methods for resolution, identical to the regular sudoku, see: General help.


Symmetrical and asymmetrical puzzles:

An irregular jigsaw puzzle is symmetrical when the squares that compose it are arranged equally around the central square known as the center of symmetry. This is only esthetic and does not change the resolution mode of the grid. Indeed it is the puzzle that is symmetrical and not the solution. However, the advantage of non-symmetrical puzzles is that, having one less constraint, they allow the elaboration of more difficult problems.


Free reproduction:

All irregular jigsaw puzzles offered on this site are created by top-sudoku.com. These puzzles can be reproduced free on condition that the link to en.top-sudoku.com appears on every reproduced page.



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