Search / Ask a Question:
Fri, 21 Feb 2020

Sudoku: Maths Puzzle or Logic Puzzle?

A question that comes up with some frequency is whether sudoku is a maths puzzle or a logic puzzle, and depending where you look, you can see it referenced as falling in both these genres.

Infact, sudoku is purely a logic puzzle.

The reason for this is that when solving the puzzle you only use logic, you do not use any maths at all.

At first glance, it is understandable why it might be thought that it is a maths puzzle: because the grid contains numbers, and usually we use numbers to do maths.

However, in this instance the numbers are there as symbols only - we do not use the fact that 9 is greater than 7, for instance, when solving sudoku, unlike a puzzle like kakuro where we do use the properties of numbers to solve the puzzle.

Indeed in sudoku the numbers could be, and sometimes are, replaced with letters, and the puzzle functions exactly the same way. Similarly they could be replaced with colours, pictures of fruits, Egyptian hieroglyphs or any other set of nine clearly different marks that you choose to come up with.

And it is because of this that ordinary sudoku is very much a logic puzzle and not a maths puzzle.
Date written: 26 Nov 2010

Category: sudoku

Keywords: sudoku

Comment on this post

If you would like to comment on this post, please enter your comments below; all fields are mandatory. Posts are moderated before display.

Your name:

Your comments:

Human testing question:
Is our favourite word: obscurity, clarity or semi-transparent?

Back to World of Puzzles
Word Puzzles

Buy Crosswords
Children's Puzzles
Arrow words
Kriss Kross
Word Ladder
Word Wheel

Number & Colouring Puzzles

Buy Sudoku
Children's Sudoku
Samurai Sudoku
Jigsaw Sudoku
Mind Games
Killer Sudoku
Chess Puzzles
A - Z of Puzzles
Colour By Number
Dot To Dot
Adult Colouring

Key Links

View a single page overview
list of puzzles
with a picture of each and a link to more information.

list of kids puzzles

Contact us

Puzzle Tools

Puzzle FAQ
Codeword Solver
Rhyming Dictionary
Puzzle Solving Tools


Puzzles for Apps
Article Writing
Themed Puzzle Pages
Press Ready Puzzles
Page Fillers
i Newspaper Solutions

View all services
© Clarity Media Ltd., 2020, company number 5465221 | Contact Us | Privacy Policy