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Royal Sudoku
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Version
1.0
Royal Sudoku is complicated version of sudoku game
destined for real puzzle kings. Game is based on Japan
puzzler also known as Suduko, Sudoko, Su do ku,
Sodoku, Suduku. In it you must to compare numbers on
game board to make them according the rules.
Lets repeat history of this puzzle. The game refers to
a number placement puzzle also known as Number Place
in USA. First Japanese title of this puzzle was "Suuji
wa dokushin ni kagiru". It's means that number is
limited only single (unmarried). But this title is too
long, then it was abbreviated as "Sudoku". So "SU"
means number, "DOKU" means single.
It seems to have first been published in the USA
before being noticed and then popularised in Japan.
And has the following simple rules. Each row, column
and subgrid inibox comprises the numbers 1 through 16
or letters A through P or anything else.
The attraction of the puzzle is that the completion
rules are so simple and yet the overall task can be
difficult. Sudoku is recommended by some teachers as
an exercise in logical reasoning.
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