www.amazon.com
www.borders.com
www.abebooks.com
www.alibris.com
It can be located by searching "HOVERDIA EIGHTEEN" or Logic Number PUzzle" or "9781419668159"
This puzzle's official web site for this puzzle book is http://www.hoverdia.com and with a registration number IP0255976-K.
The characteristic of the main puzzle is best represented by 8 long horizontal blocks and 8 long vertical blocks, which give the total of 64 boxes.
Each block with 8 boxes must contain one of the numbers from 1 to 8 inclusively - Rule One.
The main puzzle with 64 boxes is alternatively represented by 4 sub-quarters which are called Quarters and each quarter is made up of 4x4 short blocks.
In each of the 4 quarters, all the blocks must be added up to the sum of 18 (Eighteen) not only horizontally and vertically but diagonally as well.
It is two-in-one because it is not merely the placement of numbers like Sudoku and also involving calculations similar to Kakuro.
Quotes :
"We like the novelty of your reborn puzzle" James lovatt [www.lovatts.com.au]
"Looks like you are getting some bites" Jan Weiner [www.kappapublishing.com]
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