# Decodoku Puzzle Book

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Decodoku

Puzzle Book

Solve Puzzles!

Help Science!

To build a quantum computer, we need to solve puzzles.

They aren't weird quantum puzzles. They are just like the

ones you solve all the time. So help us out!

Each puzzle has a grid of numbers.

They come in groups that add up to

a multiple of 10.

There are two ? squares. You just

need to work out what's in them

(if anything).

Here's the full solution for the example

above.

The bottom right has an 8 in need of a

2. But nothing is nearby. So the bottom

left ? square must hold that that 2.

The top left has two 8's. They need a

nearby 4 to give us 20. So the top left ?

is a 4.

This example had simple groups. Mostly just pairs that add up to

10. But the groups can get more messy, as in the example below

The numbers don't need to touch to be in the same group.

But the further away they are from each other, the less likely they

are to be in the same group.

For example, look at the 7 and the 3 below. They are quite far

from each other, but neither has any other friends nearby.

So they belong together.

A final word of advice. It is possible that either ? square can be

empty. They can even both be empty!

Now we have over 100 puzzles for you to try. Once you've

finished, you'll know more about quantum error correction than

we do! So come and tell us scientsists how to do our job at

www.decodoku.com/puzzles

Do it before the end of 2016 and you could even win a prize!