You have to find this chain and mark which candidate 9 is eliminated. The alternating colours have been marked.


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If one of the candidates is false then the other must be true and vice versa.

Simple coloring in sudoku. Sudoku Graph is a graph with 81 vertices or nodes. If g83 then clearly e8 cannot be 3. Hence the other color is the solution.

A chain of conjugate pairs exists when multiple conjugate pairs are linked together. If two Nodes in the Chain belong to the same region Row Column or Square and if they have the same color then this color can not be the solution because a candidate can not be the solution for two cells in the same region. To use the coloring technique first color-in all these strong connections for a given candidate.

Simple coloring Type II uses two colours to alternately mark same-digit candidates that are conjugate pairs allowing for multiple candidate eliminations. A Review of Tutorials 31 32 including several examples of Simple Coloring Type I Type II along with many other helpful tips. How Sudoku can be solved using Graph Coloring.

Advanced Sudoku Strategies - Coloring Simple Colors Uses only 2 colors to form a single color cluster. The second green cell that shares the common column with the first green cell must be 4. Welcome to our colour Sudoku.

Each cell in the Sudoku can be seen as a. Simple Coloring Simple Coloring is also referred to as Singles Chains. These printable sudoku puzzles range from easy to hard including completely evil puzzles that will have you really sweating for a solution Theyre solvable I promise In addition youll find color sudoku for kids that serve as a transition for grade school students into the easy sudoku and beyond.

Demonstration and explanation of how to use Two Colors to map out a network of Conjugate Pairs and then eliminate Candidates that are proven to be False by. Whether you are young or old sudoku helps build critical thinking skills and is a powerful. Not only does Simple Sudoku make challenging puzzles it also provides tools to help solve them - removing the drudgery but not the fun.

It uses the second rule so the 9. All candidates with this color can be eliminated. These candidates have a strong link.

Simple Colors Simple Colors is a subtype of coloring which only uses 2 colors. All the candidates for digit 3 are highlighted. You should be able to solve any puzzle here without writing anything down and they all have only one solution.

Keeping track of possible values for blank cells candidates providing filters and color markers are just some of the tools available to make solving even those really tricky puzzles possible. Using two colors to alternately mark same-digit candidates that are Conjugate Pairs allowing for multiple Candidate Eliminations and sometimes Digit Placements. If the second case is true then the first green cell marked by an is 2.

Coloring The technique of coloring requires you to understand the nature of strong connections - a connection between two candidates that are the only two in the unit. Then the blue cell that shares the common 3x3 box with the yellow cell must be 7 since it will be the only place that the digit 7 can go in this 3x3 box. 11 July 2019 424 AM.

SIMPLE COLORING TWICE IN A UNIT. Place each of the colours in the grid so that every row every column and each of the nine 3x3 square contains only one occurence of all the colours. Although it is an advanced solving technique many player know how to use it because it is supported by the popular Simple Sudoku program.

Simple Coloring Type I. In column g the 3s are limited to two locations g4 and g8. Simple Coloring Example In this example all the possible locations for 3s are highlighted by some sort of color.

How it works 1 The following example demonstrates the principle. Simple Coloring Type I. Colors are used to indicate the opposing sides of conjugate pairs to allow potential candidate removal to be identified.

There is a ridiculously long chain using the number 9 on this board which contains twelve links. When a row column or box contains only 2 candidates for a digit one of them must be true and the other must be false. A method of coloring Conjugate Pairs that will allow you to determine which color is True and which color is False if certain conditions are met.

Coloring is a single-digit solving technique that uses colors to mark the parity of candidates.


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