If you’re fond of playing puzzles, solving math problems, and think logic reasoning you can actually combine them all in playing the Sudoku puzzle.

For you to know, sudoku was first seen in a magazine published in New York in the late 70’s by specialist puzzle publisher Dell Magazines under the name of Number Place. “Su” means number in Japanese, and “doku” means the single place on the puzzle board so that each numeral can be fitted into. Although its name sounds like Japanese, its origins came from Europe and America in which the game shows the very best in thinking and reasoning. Sudoku initially caught Japan in 1986 and gained international prominence in 2005. Unlike many other games that were known within the span of time, nothing can beat Sudoku’s challenge.

Sudoku, commonly known as the Number Place, is a logic type placement puzzle. The aim of the puzzle is to place numerical digits from 1 to 9 in each cell of a 9×9 grids that is made up of 3×3 subgrids or regions. To start playing the game, you are given in some empty cells numerals which are called “givens”. The goal of the puzzle is to put the numbers 1-9 to which it must contain only once in each subgrids, rows, and columns.

Basic rules

Rules in playing the game are very simple:

•  Sudoku is played over a 9×9 grid, divided in 3×3 subgrid.

•  Begins the play with some given numerals from 1-9 that are placed in grid cells.

•  A number can only appear once on each row.

•  A numeral can only appear once on each column.

•  Digit can only appear once on each region.

Now you finally know the basic rules in playing the game, but you’re really just starting the process of making solutions to how finish the game. There are some solutions methods that can help you and these are:

•  Scanning- it can be performed from the very beginning and throughout the solution process. Scanning basically has two techniques, first the cross-hatching. Cross-hatching technique can identify which line in a particular region may contain a digit that can be eliminated. The second is counting the region, columns and rows in identifying missing numbers. Counting based upon the last digit discovered may actually speed up the corresponding search.

•  Marking Up- the candidate numbers are simply written in subscript in the cell. The disadvantage of this is that some first puzzles are printed in magazines and newspapers which are usually small to accommodate many preferred numbers. Unlike to some newly designed Sudoku game board, all inputs are done electronically. You can also use a pattern of dots within the cell, wherein the position of the dot corresponds a number from 1-9. Dot notation can be an advantage to a sudoku that is printed in paper. In playing sudoku in print, using a sharp pencil with an eraser is highly recommended.

•  By Analysis- you can approach the game by either “candidate elimination or “what if”. In candidate elimination, numerals from one or more cells are eliminated and leaving just one choice. After each answer is placed, another scan can be done. You can check to see the effect of the contingencies. In “what if” approach, a cell can be placed with two candidate numbers then a guess should be made.

Difficulty ratings

Published Sudoku puzzles are ranked depending of rate of difficulty. For you to understand, the numbers that are given has nothing to do on a puzzle’s difficulty. A sudoku puzzle with less number of givens may be very easy for you to solve. A sudoku puzzle with more number of givens can still be very difficult for you to solve as the difficulty rate of the puzzle depends on the relevance and positioning of the given numerals rather than the number of given placed in the grids.

Computer solvers find the range of difficulties for a human to find a certain solution, based on the complexity of the techniques needed. For in this kind of estimation allows publishers to take Sudoku puzzles to be very demanding. Some sort of publications rate their Sudoku puzzles into four levels are “easy”, “intermediate”, “hard”, and “challenging” are set.

So, by playing the “fastest growing puzzle in the world”, you can be sure to challenge your way of thinking and have fun in the process.

More Webkinz Here

Learn some of the basic rules of solving Sudoku puzzles and what makes this Japanese game so popular in different parts of the world – in our special interest article on the scope of Sudoku, its solutions and how to reach faster at them.

Primarily a logic-determined number placement puzzle, the game of Sudoku involves placing numerals 1-9 in every given cell of a 9×9 grid, which is further divided into a 3×3 region and to begin the game, the player has to focus on a set of pre-entered numbers, screen these to decide how to fit others in empty cells.

While Sudoku is not a very difficult game to play, it does have its moments of flummoxing even the most intelligent player or mathematical genius simply because sometimes their approach to the game is more academic than based on logic and reasoning, which is what is required in this clever game of abstract thinking.

Players who have moved from the light and easy stage through the moderately hard to the difficult will find that using existing techniques, revisiting some of the old solutions and challenging their brain cells about strategic number placement of the Sudoku range (1-9, appearing only once in each cell in a given timeline) works for them more than trying to figure out a formula. This is why Sudoku’s main methods – Scanning, Marking Up and Analysis are never in doubt by the more experienced players and we outline these here for your perusal.

Among the most popular and accepted techniques that simplify the game, Sudoku’s 3 methods of Scanning, Marking Up and Analysis are ideal for the beginner level player to get a basic understanding of the game.

At every level of the Sudoku game, these techniques come into use: scanning is started at the beginning of the puzzle and may be done many times when a person studies various possibilities of the number placement, including the pre-entered numbers on the 9×9 grid. It consists of cross-hatching (scanning rows and columns with an imaginary line connecting possibilities next to the ‘givens’ and eliminating frequently occurring numbers to arrive at an accurate result) and counting (where missing numbers are determined, till the last numeral is ascertained).

In the marking up stage, numbers are entered after determining there are no numerals left to be detected; it consists of 2 notations – subscript (writing possibilities in a box) and dots (to denote intended numbers and to avoid confusion – suitable for more experienced players).

Analyzing is the last stage in the Sudoku solution and has 2 techniques namely, elimination and what-if used to remove possible numbers from one cell till only one choice is remaining or using clever guess-work; it involves a fair degree of trial and error and thus is not favored by perfectionists whereas What-if leaves one with 2 options to work out the complete set of Sudoku grid numbers.

Try your hand today at this fun and fast puzzle game that stimulates your brain cells and also gives you superior logical thinking skills – the more you practice it!

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