11/21/2023 0 Comments Method of solving sudoku puzzlesHere we will use the above strategies to solve a puzzle. The sumĬalculator found in the online player page canĪpplying the basic strategies. This is known as a clue, which isa part of the solution. Has a total of 3, 4, 16, or 17 there is only one combination of values Every sudoku puzzle start with some cells already containing a number. Many ways of reducing the number of sums. Making a sum, can often lead to a potential solution. Only the filled cells need to be validated according. Reducing the number of different possible ways of Can you solve this real interview question Valid Sudoku - Determine if a 9 x 9 Sudoku board is valid. Sum Elimination This strategy examines the different possible ways of making the Possible values, then no other cell in that region can contain any of If there are kĬells contained entirely in a region that contain exactly k different Rule of K The Rule-of-k is an extension of the Rule-of-1. If S is the sum of all the cages containedĮntirely in a region, then the cells not covered must Thus, each sudoku region has a total value Rule of 45 Each sudoku region (i.e., row, column, or nonet) contains theĭigits one through nine. Thus, if all the digitsīut one appear in a row, the missing digit must appear in the empty In the former case, each region must containĪll the digits one to nine. Rule of Necessity This rule can be applied to sudoku regions (i.e., row, column, or Likewise, each digitĬan appear in a cage only once. Row, it cannot be in any other cell in the row. In a sudoku region each digit appearsĮxactly once. No region canĬontain any duplicate digits. Rule of 1 This comes directly from the definition of sudoku. The following are the basic rules used to solve killer sudokus. (The Terminology used on this page is defined on the rules page.) At a later date we will post more complex We outline the basic strategies and then show how they are applied inĪ sample puzzle. The third is to consider the total value of a region. The second is to consider the different ways that a sum can beĬreated. The first is to use the strategies for solving regular sudoku puzzles. There are three basic methods used to solving killer sudoku puzzles. More advanced example based on weekly 183 Killer Sudoku Solving Strategies.Your task is to enter the missing numbers and fill in the entire grid using logic. At the beginning of the game, some 9x9 grid cells will be filled. A daily (#1271) is easier than it looks The goal of Sudoku is to fill a 9x9 grid with numbers from 1 to 9, so that in each row, in each column and in each small 3x3 square, each digit would occur only once.More advanced example based on weekly 74.More advanced example based on weekly 28.More advanced example based on weekly 24.3D Medusa Coloring | Advanced ColoringĪ set of techniques that uses colors on multiple digits. Color WingĪ technique that uses multiple clusters to eliminate candidates outside these clusters. Color WrapĪ technique that uses a single cluster to detect a contradiction in one of the colors. Color TrapĪ technique that uses a single cluster to eliminate candidates outside the cluster. Uses only 2 colors, but also takes the implications for each color into account. Weak ColorsĮxtends Simple-Colors by the use of hinge linkages. Uses multiple colors (4, 6 or a higher multiple of 2) to form multiple color clusters. Uses only 2 colors to form a single color cluster. Advanced Sudoku Strategies - Coloring Simple Colors Coloring is a single-digit solving technique that uses colors to mark the parity of candidates.Īlthough it is an advanced solving technique, many player know how to use it because it is supported by the popular Simple Sudoku program.
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