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Hidden Sets -- "Insider" Secrets from the Testing Department
In the process of creating the SBY program, our development team had to test our code by using it to solve hundreds of puzzles. We had to be sure that it could cope with the great variety of complex situations that can arise from time to time. One of the last and somewhat tricky situations that we had to understand was what we came to call "hidden sets".
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More Sudoku Tips and Strategy
Solving Sudoku: Advanced Strategies
As sudoku puzzles advance to more difficult levels, more advanced strategies are required to solve them. While basic strategies will get you started with a more advanced puzzle, they will not be enough to get you to the finish line. Fortunately, advanced strategies often build off basic strategies. Read More >>
Solving Sudoku: Basic Strategies
Sudoku is a game of logic, and it is considered cheating to guess at where a number belongs. Because it is based on logic, there are logic strategies that can be used to solve any sudoku puzzle. Knowing these strategies can make solving sudoku a fun experience, rather than making you want to pull your hair out. Read More >>>
Solving Sudoku: More Advanced Strategies
Sudoku puzzles can be complex, so it makes sense that there are numerous strategies for solving the puzzles. As the difficulty level increases, the strategies change. Here are more advanced strategies to help you wade through the sea of sudoku. Read More >>>
History of Sudoku
Although sudoku puzzles have become an international craze since 2005, they actually came into existence long before that. Sudoku puzzles actually have a history that dates back approximately 13 centuries. Read More >>>
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