Sudoku is an abbreviation of the Japanese phrase “Su-ji wa dokushin ni kagiru” which means that the “number should remain single or unmarried”. The complete name was used when the puzzle was first released in 1984 by Nikoli, the company who popularized the game in Japan. Later on, they felt that the name was too long and settled for the abbreviated version which we now use today.A first time Sudoku solver will have to first understand the basics of the puzzle before attempting to solve one. Technically speaking, a Sudoku puzzle contains a number of grids. To make it easier to understand though, let’s simply put that a Sudoku puzzle is a 9 x 9 board.The spaces that form a vertical series are the columns while the ones that form a horizontal series are the rows. There are a total of 9 columns and 9 rows that the Sudoku solver needs to fill with the numbers 1 to 9. You’ll also notice that a Sudoku board has bolder black lines and these delineate 3 x 3 boxes which have 9 spaces and there are 9 of those boxes.How to Play Sudoku?The Sudoku puzzle is derived from the Latin Squares invented by the Swiss Mathematician, Leonard Euler. It has been used for statistical treatment and other mathematical operations. However, Sudoku does not require the use of any mathematical operations, not even any of the four basic mathematical equations which include addition, subtraction, multiplication and division.One should note that numbers are only being used for the solver’s convenience not because they are necessary. Numbers are easier to track since they already come in a series. Any 9 different symbols or characters can actually be used for the puzzles, e. g. the letters of the alphabet from A to I or 9 different shapes, etc.
The only thing that a Sudoku solver should focus on when learning how to do Sudoku is the use of Logic. Each of the numbers 1 to 9 can only appear once in each row, column and smaller 3 x 3 box. The puzzle will have some of its spaces supplied with numbers already and you just have to complete the rest. Some may think that the more numbers you are given, the easier it is to solve the puzzle. However, the locations of the pre-filled spaces on the board has as much to do with the difficulty as the number of pre-filled cells
You don’t have to worry about figuring the difficulty level yourself because normally, you will see the puzzle’s difficulty level or rating printed next to the puzzle in the book or newspaper. However, make sure that you buy puzzle books from reputable puzzle makers or publishers in order to get accurate difficulty ratings.Furthermore, an indicator that you are solving a properly constructed puzzle is its restriction for having only a single solution. If you find that there are 2 or more solutions to the puzzle, then you got a poorly constructed one, and it’s best to look for other, more credible puzzle sources.