SUDOKUL

Play unlimited Cool SUDOKU puzzles with SUDOKUL!

The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid (also called ""boxes"", ""blocks"", ""regions"", or ""sub-squares"") contains all of the digits from 1 to 9.

There are many different methods that can be used to solve SUDOKU puzzles including:
(1) Elimination Methods
(2)Block Interactions Markup Styles
(3)Pairs and Multiples
(4)The Law of Leftovers
(5)Nishio, Color Chains and Coloring
(6)X-Wings, Swordfish and Jellyfish
(7)XY-Wings, XY-Chains and Forcing
(8)Chains
(9)Mixed Chains
(10)Unique Rectangles
(11)XYZ-Wings and Pseudo-Multiples
(12)Trial and Error, Forking and Tabling

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