Links
Some external sites that we think Sudoku fans and players might find interesting:
- If you want your Sudoku puzzles to be symmetrical, especially horizontal symmetry, which is rare…
http://www.e-dasa.com/sudoku/en/sudoku-puzzles.asp?of=b_2008_05 - If you insist that your Sudoku puzzles must have only 20 clues, no more and no less…
http://www.pro.or.jp/~fuji/numplace/twenty/index.html - If 20 clues are too many, and you are only game for Sudoku with minimum 17 clues…
http://school.maths.uwa.edu.au/~gordon/sudokumin.php - If you find the usual puzzles too easy, and you are the type that battles only with extreme Sudoku…
http://www.extremesudoku.info/sudoku.html - If you want to venture into extreme territory, and you wish to pick up some advanced techniques…
http://hodoku.sourceforge.net/en/techniques.php - If you are tired of the standard 9×9 Sudoku and wish to try some Sudoku variants…
http://forum.enjoysudoku.com/sudoku-variants-f12.html - If you have no money to buy Sudoku books, here is a PDF file that offers 1000 ‘very difficult’ puzzles…(but it will cost you some money to print it out!)
http://sudokugarden.de/files/1k-sudoku-1-en.pdf
- Website of Nikoli Japan, a puzzle company that which Mr Maki Kaji co-founded…
(see his pictures at the National Sudoku Seminar Photo Gallery)
http://www.nikoli.co.jp/en/ - For information about the annual World Sudoku Championship…
http://en.wikipedia.org/wiki/World_Sudoku_Championship