cZeus is an original puzzle game that offers innovative ways to practise numeracy and maths skills such as times tables, factorisation and algebra.

cZeus is suitable for any age group, from school age to adults who like to keep mentally active.

cZeus is a grid-based puzzle game, with different difficulty classes and each grid has a unique solution. The grid can be drawn in many shapes and sizes, but is most commonly rectangular.

cZeus has four simple rules and the aim is to find the answers to a set of mystery numbers by using the given clues.

cZeus has five difficulty classes. You start as a Mortal, then progress through Hero, DemiGod, and Olympian to the most difficult class, Titan.

The easiest class, Mortal, is good for quick numeracy practice, and requires some logic and a basic understanding of cZeus rules to be solved. It is an entertaining alternative to traditional ways of refreshing times tables.

The need to apply logical thinking and a good understanding of cZeus rules really begins at Hero class and progressively gets harder. DemiGod and Olympian are challenging, while Titan is mainly for wizards and serious puzzle players.

Unlike the other five classes, the Light class has no time limit to play, making it a great learning tool.

Principles of cZeus are illustrated here using this example puzzle.

The aim of cZeus game is to find all the missing mystery numbers by using the given clues and the rules.

These are the unknown numbers located in small square tiles.

Your mission is to reveal these by using clues and applying cZeus Rules.

In this example puzzle on a 3 by 4 grid, there are 12 mystery numbers.

However two of the mystery numbers, 1 & 2, are already given, and so only 10 mystery numbers remain to be solved.

Your mission is to reveal these by using clues and applying cZeus Rules.

In this example puzzle on a 3 by 4 grid, there are 12 mystery numbers.

However two of the mystery numbers, 1 & 2, are already given, and so only 10 mystery numbers remain to be solved.

These are **any two neighbouring **Mystery Numbers, connected vertically or horizontally.

A mystery pair always has a unique set of addition and multiplication values.

A mystery pair always has a unique set of addition and multiplication values.

e.g. mystery pair 1 and 4 is horizontally connected

e.g. mystery pair 4 and 4 is vertically connected

These are shown in the rectangles in between Mystery Pairs.

There are two types of Pair Clues:

Add clues are the sum of the mystery pair

Times clues are the multiplication of the mystery pair

A Mystery Pair always has a unique set of Pair Clues.

So, a Mystery Pair can be identified from its respective set of Pair Clues.

These are given on the central square tile surrounded by the four Mystery Numbers.

There are two types of Square Clues:

**e.g. is a square add clue
= **

**e.g. is a square times clue
= **

There are two types of Square Clues:

You are given a number of Pair Clues and Square Clues to identify these.

& and &

& and &

It can occur once or not at all in a puzzle!

Aim to spot it quickly to score more points!

If you think you have

more than one solution

you have probably broken Rule 2.

These videos may have older graphics as the game has been upgraded but the concept of solving the puzzles are same.