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Constellation Sudoku 

Constellation Sudoku* 

by Henry Kwok** 





Another clever variation of Sudoku
on a "standard" 9x9 grid which contains a set of special
cluenumbers. These are small numbers placed on the
border lines between selected pairs of neighboring cells
of the grid. Each cluenumber is the difference of two
numbers that should be in the respective pair of the
neighboring cells just next to left & right (or right &
left) from that cluenumber.
For example, cluenumber 7 on the line between two
neighboring cells means that possible pairs of numbers
for these cells can be from the following combinations:
1 and 8; 2 and 9; 8 and 1; or 9 and 2.
Also, an additional set of 15 starting numbers {1, 1, 2,
3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9, 9} is given to fill in
the 15 squares containing stars, a number per star. All those
15 starting
numbers should be used, but their order can differ from
that shown.
The remaining rules are as in a "standard" Sudoku, and
the object of the puzzle is to fill in the whole 9x9
grid with numbers 1 through 9 (one number per cell) so
that each horizontal line, each vertical line, and each
of the nine 3x3 squares (outlined with the bold lines)
must contain all the nine different numbers 1 through 9.
IMPORTANT NOTE. The Constellation Sudoku may be hard to
solve!
To solve the puzzle you may want to print just the above grid.
For this click the image of the grid to go to a new
window with this grid; then you can print it out.
Note that you can print the puzzle for your own use
only, and not for any kind of commercial profit. 











Last
Updated: October 14, 2008
Posted: May 21, 2007 







