Sudoku Gordonian Polygon
What is Gordonian Polygons in Sudoku puzzles?
This is a technique to solve a hard Sudoku puzzle.
Gordonian Polygons are an extension of Gordonian Rectangles which are also known as unique rectangles and explained here:
http://www.brainbashers.com/sudokuuniquerectangles.asp
Gordonian polygons use the same idea as the rectangle but with more than 4 sides. There is an explanation in Peter Gordon’s book: “Mensa Guide to Solving Sudoku” but without a diagram it is pretty impossible to repeat.
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