Friday, 15 December 2017

Tridoku - Try It!

Some time ago I came across this intriguing idea from Alex Bellos who has produced some colouring books of patterns, based on maths.
He explains what happens in this Tridoku -

" If you colour in a (solved) Sudoku so that each digit represents a different colour – so 1 is, say, red, 2 is blue, and so on – then each colour will appear only once in each line and column. The result is a multicoloured patchwork that, while not symmetrical, is perfectly balanced and harmonious."

You can download the template - here.


Tridoku template

How to do it?
Select 9 colours and allocate one colour to each number up to 9. Then simply colour in all the numbers as set out on the chart.

This is a useful and interesting way to test out colour palettes and I've done several as you can see below.

It's also great to chill out with when you don't feel like tackling a colouring. Mostly I use marker pens but it's easier to get into the corners with pencils.



For a yellow challenge


Hallowe'en colours


My first Tridoku
Done in pencils

Okay, enjoy yourselves!

Some of Alex Bellos' books -



Snowflake, Seashell, Star

You can buy it - Book Depository;
Amazon US;   Amazon UK










Visions of the Universe

You can buy it at - Book Depository;
Amazon US;   Amazon UK









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