How To Solve Irregular Sudoku Puzzles In Record Time

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Contents

Introduction

Irregular Sudoku is like the traditional Sudoku game, with one exception: the 9 squares in each row, column, and 3×3 box don’t have to contain all of the different numbers from 1-9.

This makes the game much more difficult, as each square has many more possibilities.

In this blog post, we’ll show you how to solve an Irregular Sudoku puzzle and give you some tips on how to best approach this challenging game.

Irregular Sudoku is one of the toughest variants of the popular logic puzzle.

It presents the solver with a 9×9 grid, but instead of the usual 3×3 squares in each row and column, there are sets of varying sizes and shapes.

The object is to fill in the missing numbers so that each column, row, and set of 3×3 squares contains all of the digits 1-9 exactly once.

Techniques for Solving Irregular Sudoku

Irregular Sudoku puzzles can be quite daunting, but you can solve them in no time with a few simple techniques.

Technique 1:

First, try identifying the rows and columns that have the most possible numbers in them.

Once you’ve done that, start by filling in those numbers and work your way out from there.

If all else fails, there’s always the backdoor method!

Technique 2:

The 2nd thing to do is identify any squares that contain two or more of the same number.

Technique 3:

The third trick for solving Irregular Sudoku is solving the easy squares and working your way towards the harder ones.

This is a good approach if you are stuck on a particular square and don’t know where to go next.

Technique 4:

Another technique is to fill in the squares with the most candidates first.

This will often give you a few clues about how to solve the puzzle.

Technique 5:

You can also use a “wing” technique, which is when you fill in a square on one side of the grid based on the information from another square.

Technique 6:

The most basic and straightforward approach is trial and error – trying different combinations of numbers until the puzzle is solved.

This can be a time-consuming process, but it often works well for only mildly irregular puzzles.

Technique 7:

Another method that can be used is the ‘cross-hatching’ technique.

This approach involves dividing the grid into smaller sections and solving each section individually.

Technique 8:

Once all sections have been solved, the individual solutions can be combined to form the complete answer.

Variants of irregular Sudoku

Irregular Sudoku has a lot of variants, but common variants are below from simple to complex forms.

Irregular Sudoku 5×5

A very simple and easiest sudoku variant is the 5×5 sudoku variant which is the most simple to play, and the common sudoku variant contains numbers from 1 to 5.

6×6 Irregular Sudoku Puzzle

Another is the 6×6 sudoku variant, the basic and ubiquitous sudoku variant, with numbers ranging from 1 to 6.

7×7 Irregular Sudoku

Another sudoku variant is 7×7, which is difficult to play, with numbers ranging from 1 to 7.

8×8 Irregular Sudoku Variant

Another variant is 8×8, which is difficult to play, with numbers ranging from 1 to 8.

Irregular Sudoku Variant 9×9

The next Sudoku variant is 9×9, with numbers from 1 to 9. You have to use numbers between 1 to 9 for the solution of this sudoku puzzle.

10×10 Irregular Sudoku puzzle

In this Sudoku Variant, numbers between 1 to 10 are used to play this variant. It is a hard puzzle to play.

**Sudoku 11×11 puzzle**

This sudoku variant is difficult to play .because it is a combination of numbers from 1 to 11 for playing.

12×12 Sudoku Puzzle

This Sudoku puzzle is difficult to understand and very hard to play; the numbers used for playing this puzzle game lie between 1 to 12.

**Super hard Irregular Sudoku 16×16 puzzle**

This sudoku variant is very difficult to understand and play. Because it contains numbers between 1 to 16 to play.

Rules for Solving irregular Sudoku Puzzle

As all Sudoku puzzles are a popular brain teaser that can be found in newspapers and magazines.

They are also available online, and they come in different shapes and sizes.

Some Sudoku puzzles have irregular shapes, meaning that the numbers 1 through 9 don’t appear in a straight line or column.

If you’re looking to solve these types of puzzles quickly, you have to follow a couple of rules.

Rule 1:

The standard sudoku rules apply to this irregular Sudoku puzzle.

According to these rules, numbers with 1 – 9 occur once in each row, column, and, in this case, irregular in shape thick line group of nine cells.

However, one rule that you may discover yourself utilizing more often than in regular Sudoku is area crossing removal.

Rule 2:

The best way to solve irregular puzzles is to use the patterns in the areas.

Those that cross a significant number of cells in another location (intersect over those cells) are extremely valuable.

Let us wait and see how this plays out in actuality.

Rule 3:

Looking for uses of this at the start of the game can be the key to fast entering values and making the correct eliminations in puzzle sudoku.

When completing puzzle sudoku, you’ll notice that you’ll need to use pencil marks a lot more than you would when doing regularly.

If you are playing very hard Sudoku, which requires you to comb through this and note down each possibility for a particular cell carefully to reduce the possibilities because this is a very hard sudoku puzzle game.

Rule 4:

We can simply place the ‘6’ in row six using the simple logic above, and it pays to expend some time at the start of the problem checking for numbers that must go in a specific cell in a row, column, or box.

Also, it’s able to establish the 5 in row 6 straight away.

Only 1,3,7 should be put in the right order in cells 4,5,6 of row 6. 137, 37, and 17 are the options for those cells, with the 1 in column 5 and the 3 in column 6.

As a result, R4C5 and R4C6 must be 4 and 8, respectively, having 48 and 48 pencil marks in those cells.

Rule 5:

We can now rule out 4, 8 from all other cells in row four, allowing us to position the 8 in row five and accurately organize the 4 and 8 in row four.

The benefits of solving Sudoku puzzles

Irregular Sudoku puzzles are a great way to keep your brain active and healthy.

These puzzles come in different levels of difficulty, so you can find the perfect challenge for you.

When you solve an Irregular Sudoku puzzle, you are working out your brain’s problem-solving skills.

This can help keep your mind sharp and improve your memory.

Irregular Solving Sudoku puzzles can help improve your problem-solving skills.

They can also help improve your memory and reasoning skills.

How to quickly solve irregular Sudoku puzzles

Irregular Sudoku puzzles can be very frustrating, but with a little bit of practice and some basic techniques, they can be solved quickly.

Elimination Method

One way to solve irregular Sudoku puzzles is by using the elimination method.

This involves systematically eliminating possibilities until only one option remains.

For example

If you are trying to solve a 4×4 Sudoku puzzle and there are only two squares left in the bottom row containing the number 1, you would mark those squares with an X and then solve the rest of the puzzle.

If both squares contain the number 1 after solving the rest of the puzzle, you must first solve this.

The 2nd step is to identify the two corners of the puzzle.

Once you have those two corners, the rest of the puzzle will quickly fall into place.

For example

In the puzzle below, the two corners are A and D. From there, it’s easy to see that the other squares in the column and row can be filled in with the numbers 1 through 9.