Web sudoku is a type of logic game that is popular around the world. Sudoku is classified as one of the best brain games to train intelligence and logical thinking today. It helps the players to practice very well their ability to think logically and quickly, the ability to observe as well as use the method of elimination in a very flexible way.

Sudoku has many different forms, the standard and most popular form is a square board, each dimension has 9 small cells, 9 columns, 9 rows and is divided into 9 large 3x3 cells. There are a few numbered boxes, which are hints to find the solution.

From those numbered small squares, the games must infer to fill in the remaining blanks with numbers from 1 to 9 so that each vertical column, each horizontal row in each large box has enough numbers from 1 to 9 that are not repeated. what number again.

Basic rules for playing Sudoku:

1. Find the rule for triples in big Sudoku

That is, when you start solving a large Sudoku, follow this rule to find a triple that contains 1 number for 3x3 Sudokus.

Let's example:

In the picture below, with the position of the 7, then the remaining 7 in the bottom left 3x3 Sudoku online will definitely be in the position marked in blue.

Or look at the position of the number 8 circled in pink, the remaining position is the position marked in the image below.

Following that logic, judge the position of sets of 3 numbers to find the answer to the problem.

2. Make a note if you are not sure.

If there is a case, in a 3x3 Sudoku that has the ability to lie in 2 or more positions, please make a note to the side, so that when you find the answer for sure, write it down, absolutely do not fill it out when you are not sure. If you write it in, it will all be a mess, making you more confused the more you solve the problem. And will never win, when the solution is more and more deadlocked. The simple math problem will become extremely complicated if you just enter a wrong position in Sudoku.

For example, in the case of number 2 like the image above, it is not possible to determine the exact location, please make a note of the positions where the number 2 can be filled.

This principle is extremely important with complex Sudoku exercises.

3. Judge the lone number.

In Sudoku 3x3 guess a number is present, then compare with rows and columns on large Sudoku.

For example, in the top left Sudoku of the 9x9 Sudoku below, we can immediately guess that the position of the number 3 is probably in the position circled in blue. The goal is to minimize the number of candidates for that position.

4. Exclusion rules.

Think and judge the unlikely cases, and rule them out in the first place so that you don't have to get stuck in the next steps.

The Sudoku concept is a fun board game that doesn't use arithmetic. It's an entertaining game that enables players to use logic to solve puzzles. The most common Sudoku version is the traditional 9x9 grid, which calls for the arrangement of numbers without duplication throughout each cell board. Yes, learning to master the Sudoku grid is not difficult. You need simply be aware of Sudoku's fundamentals, goals, and regulations. So what are you waiting for, play now this game. Also watch another game here.