Sudoku Variations


From the classic 9×9 grid Sudoku puzzle, a number of Sudoku variants are now present almost anywhere. These variants usually have different grid sizes and/or have additional rules and guidelines unique to that certain type of Sudoku puzzle. In this article, we will be discovering 4 of the many Sudoku variations that you can find out there. Let us learn about Mini Sudoku, Mega Sudoku, Irregular Sudoku, and Multi Sudoku.

Mini Sudoku

Mini Sudoku can either have a 4×4 grid size or a 6×6 grid size. Thus, it has a smaller grid size compared to the classic 9×9 Sudoku puzzle. Still, the main goal for every Sudoku player when completing a Mini Sudoku puzzle is to make sure that a number only appears once in every row, every column, and every sub-square.

For the 4×4 Mini Sudoku puzzle, you must make sure that each number, ranging from 1 to 4, should not appear more than once in each row, column, and sub-square. The same law applies for the 6×6 Mini Sudoku; each number, ranging from 1 to 6, should not appear more than once in each row, column, and sub-square.

Because it has the least set of numbers, we can argue that Mini Sudoku is much easier and faster to complete compared to other types of Sudoku puzzles. Thus, it is good for beginners.

Mega Sudoku

Compared to the classic 9×9 Sudoku puzzle, Mega Sudoku may either have a 12×12 grid size or a 16×16 grid size. Filling those empty boxes with the numbers 1 to 12 (for 12×12) or 1 to 16 (for 16×16) without repeating a single number in each row, each column, and each sub-square is still the primary goal.

Due to its larger grid size, completing a Mega Sudoku puzzle may take longer time. But its difficulty still depends on the number of prearranged numbers present in a Mega Sudoku sheet.

Irregular Sudoku

When you first see an Irregular Sudoku sheet, you will notice that its sub-squares (or “regions”, most appropriately) are shaped as irregular boxes. In these irregularly-shaped boxes, you will also have to see to it that each number does not appear more than once regardless of grid size.

An Irregular Sudoku puzzle may have a 6×6 grid size, a 9×9 grid size, or a 12×12 grid size. For the 6×6 Irregular Sudoku puzzle, each row, each column, and each irregularly-shaped box should have a particular number, ranging from 1 to 9, only once. The same goes with the 9×9 and 12×12 Irregular Sudoku puzzles, where you have to see to it that the numbers 1 to 9 and the numbers 1 to 12 should only appear once in every row, column, and irregularly-shaped box, respectively.

Multi Sudoku

Multi Sudoku is one of the more complex variations of Sudoku. This is because a single Multi Sudoku puzzle involves more than one Sudoku variant and variant rules.

Every Multi Sudoku sheet has two – or even more – Sudoku grids that overlap at some area or sub-square. The overlapping sub-squares must be completed by following both two variant rules of their respective main grids. Still, the main goal is to complete the Multi Sudoku puzzle by making sure that no single number should appear more than once in each row , column, sub-square, or irregularly-shaped box (when Irregular Sudoku is included as one of the variants).

This Sudoku variant can be very puzzling but promises you to have the challenge that you are looking for when playing Sudoku.

Try these Sudoku variations now and see if you are flexible enough to complete them with the unique puzzle twists that each of them has.