A series of helpful and challenging websites on Sudoku:
What's a Pappacom
puzzle? What are symmetrical clues? Computer-generated or hand-constructed
puzzles?
Wikipedia
All about Sudoku, strategies, etc.
Natural
Maths Sudoku
Use Microsoft Excel to help you learn to solve Sudoku
Websudoku:
"Billions" to work online, four levels of difficulty,
with checking feature
Sudoku . com
What you would expect: beginning to learn, and characteristics.
Sudoku . com. au
Australian Sudoku solving on line with a picture for a reward!
Website overview: Since 1996 the
Study Guides and Strategies web site
has been researched, authored, maintained and supported by Joe Landsberger
as an international, learner-centric, educational public service. Permission is granted to freely copy, adapt,
and distribute individual Study Guides in print format in non-commercial educational settings that benefit learners. Please be aware that the Guides welcome, and are under, continuous review and revision. For that reason, reproduction of all content on the Internet
can only be with permission through a licensed
agreement. No request to link to the Web site is necessary.
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