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# Combiku Puzzle

It is easy to play but challenging to solve and appeals to the same people who like Sudoku.

The rules are simple:

You are given a 5x5 board which contains some numbers and letters on it.

Your objective is to complete the board by placing exactly one Number and one Letter in each square.

The conditions to satisfy are :

Two squares cannot have the same combination Number-Letter.

A Number or Letter cannot be repeated in the same column or row.

Usually the possible numbers are from 1 to 5, and the letters are from A to E.

Combiku puzzles are rated from 1 to 5 stars (5 being the hardest). Puzzles from 1 to 4 stars can be solved without guessing, they only require careful logical analysis. Puzzles with 5 stars may require a little guessing at one moment or another. But in all the cases there is always one and only one solution.

Be aware that the logic rules that you apply to solve Sudoku may not be enough for Combiku, you will be forced to look at the puzzle in a more holistic way.

Combiku comes in different presentations:

·       The standard Numbers and Letters

·       Shapes and Letters

·       Numbers and Colours

·       Shapes and Colours

Combiku puzzles are available 7 days a week either for printing or to be integrated in a web page using a Flash based interactive control.

The Flash control for the web has the following features:

·       A puzzle can be saved at any time to be resumed later

·       Unlimited Undo-Redo

·       Hint button to indicate which values are still valid on each square

·       Notes on each square that enable very easily to keep track of your own conclusions

·       Instant switch between “Numbers and Letters” and “Shapes and Colors”

·       Automatic detection of invalid moves

An additional challenge can be proposed after a Combiku puzzle is solved: Try to discover a coded word using the number-letter combinations of one of the rows or columns of the final board. For example:

The sequence *3352 can be translated into APPLE if one of the rows or columns of the final board have the following values: 4F, 3P, 2E, 1B, 5L. But you have to find which row or column is the right one. The asterisks can be translated into any letter. A little hint is given; in this case it could be something like: Newton’s.

Alvaro lives in the south of France, and has been a passionate of puzzles for several years. He still likes Sudoku, but he realized that the region concept of Sudoku was too static and he decided to break it by adding a new variable that could group the numbers in a board even if they were disjoint. That was the original intent of the letters. You can see a Combiku puzzle as having 5 fragmented regions (A, B, C, D, E) every time distributed in a different way, and it turned out that this fact completely changed the experience of solving the puzzle with respect to a traditional Sudoku.

Alvaro has been involved with software development for many years, and he can satisfy your custom requirements for the on line Combiku.

Author: Jamie Foronda

For further enquiries, please email Margret on margretp@auspacmedia.com.au or call us on 07 5553 3200.

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