Sudoku, also known as Su Doku or Suzuko, is a popular form of number game. It is based on logic and requires that the same digit not appear more than once in any row, column, or square.
Many variants of the puzzle have been invented. These include “Number Place Challenger” puzzles, which require the numbers in a specified group of cells to be different from those in adjacent rows and columns, and “Killer Sudoku” puzzles, which add rules such as requiring that numbers in the main diagonals also not be unique.
How To Do A 6×6 Sudoku Grid?
Sudoku is one of the most popular brain teasers in the world. It has become a staple in newspaper puzzle sections and on airplanes.
It has also been linked to reducing stress, boosting concentration and focus, and even preventing depression, dementia, and Alzheimer’s disease. This is because it requires logic and concentration rather than guesswork.
In 6×6 Sudoku, the grid is smaller than a traditional 9×9 grid but the rules and solving strategies are still the same. For instance, columns must not repeat any numbers.
This is why you should check each square to see which numbers are already there. That way you can determine if there’s a space for another number in that row, column, or square.
You can also use a technique called “slicing and slotting” to help you focus on specific areas of the puzzle. This can be especially helpful if you’re new to Sudoku or are overwhelmed with an entire grid.
While this technique isn’t a guaranteed way to get the puzzle solved, it can be an effective tool in helping you break it down into manageable parts. However, it is not the best option for brand-new players.
How Many 6×6 Sudoku Puzzles Are Possible?
There are only a handful of truly unique possible Sudoku grids. Considering that each grid can have more than 5.5 billion digits, there are only about 670,903,752,021,072,936,960 essentially different ones!
This is a very low number, but that doesn’t mean that there aren’t some really close duplicates or similar puzzles. It just means that there aren’t enough distinct possibilities to fill up a whole lot of space with them.
One way to increase the number of solvable puzzles is to use the rules of derangements. Basically, you swap the digits around and change their locations a bit. This is done for the sake of preserving the number of solvable grids, but it also keeps them a bit easier to solve.
The simplest and most basic type of derangement is the permutation of B1, B2, and B3. This preserves the number of solvable grids and also makes them a bit easier to solve.
Alternatively, you can use almost-locked sets. These are a subset of all c-clue puzzles in a sudoku grid that are pairwise disjoint and are characterized as “bent naked.”
We used this type of analysis extensively when we were developing our Sudoku Assistant. We found that it can be a very effective tool for eliminating weak links to strong chains. It’s not always easy to find these eliminations, but they are definitely worth looking for!
Free Printable Sudoku 6 Per Page
Sudoku puzzles are a fun way to exercise your brain. They don’t require any math skills, but you do need to use logic and spatial skills to solve them.
They are also good for memory improvement. A lot of the strategies for completing them depend on finding the numbers that must go in certain empty cells.
Fortunately, the rules for these puzzles are very simple. Each row, column, and 3×3 box must contain all the numbers 1 to 9 exactly once.
The simplest strategy is to check the number of empty positions in each region (marked by a thick black line). In this example, we can see that there are only two open spaces in one of the rows.
This means that there can only be a single value in each of the three empty regions, and it is this number that must be put in each empty cell. This is where practice comes in handy! Free Printable Sudoku 6 Per Page