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A quick list of the latest updates and additions to this site:
Jelly-Fish Strategy
Date Created: Friday 11-Apr-2008
Last Updated: Wednesday 1-Feb-2012
Sudoku Strategy. Jelly-Fish extends Sword-Fish into four rows and four columns. Candidate eliminations are possible where the cells that form the Jelly-Fish are the only possible places for a solution on candidate N."
AIC with ALSs
Date Created: Saturday 12-Apr-2008
Last Updated: Wednesday 1-Feb-2012
Grouped X-Cycles
Date Created: Saturday 12-Apr-2008
Last Updated: Tuesday 31-Jan-2012
Sudoku Strategy. All chains used in Alternating Inference Chains strategies can take advantage of grouped cells for the purpose of finding links. This explains how.
Intersection Removal
Date Created: Thursday 3-Apr-2008
Last Updated: Tuesday 31-Jan-2012
Sudoku Strategy. Pointing Pairs and Box Line Reduction are two Intersection Removal strategies used to eliminate candidates in the boxes that intersect the row or column that the formation lies on.
Hidden Candidates
Date Created: Wednesday 9-Apr-2008
Last Updated: Tuesday 31-Jan-2012
Sudoku Strategy. Hidden Pairs, Triples and so on - these are the candidates in cells aligned on a row, column and box which can be used to remove other candidates the formation is aligned with.
Naked Candidates
Date Created: Thursday 9-Jun-2005
Last Updated: Tuesday 31-Jan-2012
Sudoku Strategy. Naked Pairs, Triples and so on - these are the remaining candidates left in cells aligned on a row, column and box which can be used to remove other candidates the formation is aligned with.
AIC with Groups
Date Created: Saturday 12-Apr-2008
Last Updated: Tuesday 31-Jan-2012
Sudoku Strategy.Alternating Inference Chains can take advantage of grouped cells to make links. This article explains how.
What's New
Date Created: Monday 17-Aug-2009
Last Updated: Wednesday 25-Jan-2012
Strategy Families
Date Created: Saturday 12-Apr-2008
Last Updated: Wednesday 25-Jan-2012
This is the index to the all the fully documented strategies used to solve Sudoku, Jigsaw Sudoku, Sudoku X and Killer Sudoku.
Getting Started
Date Created: Wednesday 25-Jan-2012
Last Updated: Wednesday 25-Jan-2012