In my first post, I shall talk about one of the most common puzzle we can find today: Sudoku
"Su" means number in Japanese, and "doku" means single or unmarried.
Basically, the concept of solving the puzzle is to fill up numbers from 0 to 9 in each empty boxes, but the numbers can only occur once in each smaller 3x3 square grid, and also in every row and column.
Although the puzzle consists of only numbers, but arithmetic skills is not needed for solving this puzzle, because Sudoku is actually a logic-based type of puzzle.
Watch the video below for guides and tips on how to solve a Sudoku puzzle:
History of Sudoku
In the 18th century, a Swiss mathematician called Leonhard Euler developed the concept of 'Latin Squares', the concept where numbers in a grid appear only once, across, up and down.
The current, modern form of Sudoku that we are familiar with, started to get into shape in the late 1970's, when the Dell Magazines in US published a puzzle called Number Place, a puzzle that was created based on the 'Euler's Concept' with a 9x9 square grid. The puzzle was developed by a puzzle maker called Howard Garnes.
The puzzle was first introduced in Japan on 1984, by Nikoli, a leading puzzle creating company in Japan.
The puzzle was first named as Suuji Wa Dokushin Ni Kagiru (which means "the number must be single" or "the number must occur only once"). It was only until 1986, the name Sudoku was abbreviated from its original long name after Kaji Maki, the president of Nikoli found out the long name was the only problem of the puzzle.
Today, Sudoku can be found in major newspapers around the globe, on the Internet, where websites like Sudoku: Daily Puzzles, Web Sudoku and Sudoku Puzzles can be found. Sudoku puzzles are also available in the form of phone applications, where the puzzle can be generated by the application itself.
You can even seek help from Sudoku Solver if you have trouble solving the puzzle.
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