15 Mind-Bending Sudoku Variants To Test Your Brain (The Ultimate Guide)

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Today we are going to tell you about 15+ amazing sudoku variants you probably haven’t seen & must try.


Introduction to Sudoku Variants

If you’re looking for something that will keep your brain working overtime, Sudoku is the perfect puzzle for you. It’s one of those puzzles that has a unique ability to improve your cognitive skills and test your problem-solving skills.

Since there are countless Sudoku Variants out there, we’ve created this list of 15+ amazing Sudoku variants to help you find the best puzzle for you.

Sudoku variants

Sudoku is a number-placement puzzle that was created in Japan around 1783. The name of the game is derived from the Japanese words for “single” and “number”, which were combined to form su (“s”) and doku (“Ku”). There are many different variations on the basic sudoku formula.

Here’s a gander at a portion of the popular ones below.

Classic Sudoku

Sudoku is a fun puzzle game that has grown in popularity since its creation in the late 1970s. It involves placing numbers one through nine into a grid, with some cells already containing numbers. The point of the game is to fill each of the vacant spaces so that each line and section contains one of each digit from 1 through 9. A number can show up once in each line and section.

There are many variations and varieties found in the sudoku puzzle it can be following:

Classic Sudoku is available on the internet and page magazines in various sizes like six by six, eight by eight, ten by ten, twelve by twelve, and sixteen by sixteen.

Jigsaw Sudoku

Jigsaw Sudoku

Jigsaw Sudoku is a puzzle game that is played on a rectangular grid. Jigsaw Sudoku is the same as ordinary Sudoku puzzles, yet rather than solving squares or grids, they are partitioned into sporadic jigsaw-like shapes. Each line, segment, and jigsaw shape contains every one of the digits one through nine.

Try the online version of these puzzles.

Consecutive Sudoku

Consecutive Sudoku

The back-to-back Sudoku puzzle comprises a standard Sudoku framework with the expansion of white “successive markers” between specific squares. These demonstrate that the squares are sequential – implying that the numbers in the two squares have a mathematical contrast of ‘1’.

For instance: 1 and 2 are back to back, as are 4 and 5, alternately 3 and 5 are not successive.

To settle the riddle, you should put 1 to 9, or 1 to anything that the size of the riddle is.

There’s also a bold line in each row and segment, so you have to solve accordingly to the rules of the consecutive Sudoku.

What’s truly critical to note is that all continuous markers are given, so if there is no marker between two squares, they are not back to back.

Check out the addressed riddle on the above. The 5 at the upper left has a bar among it and the 4 since they are sequential, yet it isn’t continuous with the 2 underneath, so there is no bar.”

Follow the link if you wanna know further regarding consecutive sudoku & try the online version of these puzzles.

Non-Consecutive Sudoku

Non-Consecutive Sudoku

In Non-Consecutive Sudoku, we’ll have to place a solitary digit from 1 to 9 into every cell, so no digit rehashes in any line, section, or intense 3×3 districts.

No pair of continuous digits can be set in upward or evenly adjoining cells.

Place a solitary digit from one to nine into every cell, so no digit rehashes in any line, section, or strong three by three area. No pair of sequential digits can be set in upward or evenly adjoining cells.

Windowku Sudoku

Windowku Sudoku

Windowku sudoku is a puzzle game that is played on a grid of squares. The game’s objective is to fill in the empty squares with numbers so that each grid contains all of the numbers from one to nine. Windowku sudoku was created by the Japanese mathematician Tetsuya Miyamoto in 2006. It was originally called “Windowku” because it was designed for Windows-based PCs, but it has since been renamed “Windowku Sudoku” to avoid confusion with other games.

Many addressing procedures for typical Sudoku can be utilized. Yet, you will likewise have to utilize the 4 windows sheets to check for singles, sets, significant increases, and their connection with lines, segments, and boxes.

The manners in which the 4 window sheets are situated permit you to find 5 extra gatherings of cells where digits 1 through 9 can go. These inferred rules can be exceptionally valuable when attempting to tackle this riddle.

Odd or Even Sudoku

Odd or Even Sudoku

An Even/Odd Sudoku is addressed very much like a Sudoku by filling the numbers from one to nine into the clear cells.

The more obscure dim cells are just for even numbers, and the lighter dark for odd numbers. Indeed/Odd Sudoku is simpler than an exemplary Sudoku.

Diagonal / X Sudoku

Diagonal X Sudoku

X Sudoku additionally alludes to Diagonal Sudoku. It is one more sort of standard Sudoku. Because of standard Sudoku, Diagonal Sudoku has more prerequisites. Numbers on different sides of slanting lines must be numbers from one to nine and can’t be replicated.

In the X sudoku, all the digits from one row have been put into a grid, but only with a single-digit per column. There is no need to figure out which columns you need to fill with diagonal sudoku puzzles because each has a single digit.

Follow the given link if you wanna play Diagonal Sudoku Online.

Thermo Sudoku

Thermo Sudoku

Thermo sudoku, also known as thermal Sudoku or steam sudoku, is a variation of the traditional Japanese puzzle game of Sudoku.

In the Sudoku, every one of the numbers put in cells overlaid by a thermometer should increment in esteem from the circle bulb of the thermometer to the opposite end. All things are equal; they will be of fluctuating lengths, including extremely short ones comprising just two cells.

Classic sudoku rules apply in the Thermo sudoku, and the numbers are expanded from the bulb (the circle) towards the opposite end, as shown in the below image.

Word/Wordoku Sudoku

Word or Wordoku Sudoku

Wordoku sudoku is a word puzzle that has been around for a while. It’s a puzzle that is solved by finding words in the grid, which are created by using the letters on the right of each row and column.

The object of wordoku sudokus is to fill in each letter square with a word that uses all the letters on the right of each row and column. The puzzles are usually printed with Japanese characters but can also be found with English letters.

Dots Sudoku

Dots Sudoku

Dots sudoku is a puzzle game for all ages. It is usually played on a square grid with dots, which are black or white.

The objective of the puzzle is to fill in all the squares with numbers from one to nine, once and only once, without any rows or columns containing two numbers that add up to ten.

Dots sudoku puzzles can be solved by using logical reasoning and deduction skills.

Sandwich Sudoku

sandwich in green

Sandwich Sudoku is a Sudoku variation where you are given additional numbers outside of the matrix lining up with the lines and segments.

Arrow Sudoku

Arrow Sudoku

In Arrow Sudoku, each puzzle contains a small bunch of “bolts” spread out in remarkable patents.

Arrow Sudoku is a Sudoku variation where bolts from surrounded cells are overlaid on the network. It doesn’t make any difference what request the digits along the arrows are in.

The main extra decision is that they should aggregate to the digit in the circle surrounded cell.

Samurai (Simple) Sudoku

samurai sudoku

Samurai sudoku, also called Gattai-5 or as simple Samurai, is a sudoku variation with five covering matrices that should be settled.

These five matrices cross over to frame an X shape as displayed beneath. In many forms of Samurai Sudoku, every one of the five standard sudoku networks can be settled freely of one another.

Renban Sudoku

renban sudoku

Renban Sudoku is a Sudoku variation where one more imperative or rule is included expansion to the ordinary principles of Sudoku.

The riddle begins with a portion of the cells filled in with numbers. The player fills in any unfilled cells with numbers so that each line, section, and three by three grid box contains every one of the nine digits with practically no copy passages.

Kropki / Black and White Sudoku

kropki sudoku

Kropki Sudoku is also known as Black and white Sudoku.

Kropki Sudoku puzzles take the guidelines of standard Sudoku and include both highly contrasting circles to show sets of numbers which are separately either twofold each other in esteem or are back to back.


As you can see, there are many different types of Sudoku variants out there. You can find one that suits your skill level and learn something new in the process. Some of these puzzles will test your brain, while others may be challenging for a beginner. Let us know which one you liked best!