Sudoku puzzles have become a popular pastime of late and here in the Department of Mathematical Sciences Prof. Peter Higgins has developed a new variant
of them which we call circular, or target, sudoku. Prof. Higgins' puzzles began appearing in the Sunday Telegraph in June 2005, but just in case you have
missed them we have one here for you to have a go at. The instructions are given with the puzzle.
If you would like to see the solution to the puzzle then send an e-mail
For a further collection of puzzles there is a
book of Circular Sudoku puzzles now available, you can download
CircularSudoku.ps for a further taster (please note you need a postscript viewer such as GhostView to open it) or you can now buy a
Circular Sudoku electronic game.
Last modified on 10 October 2012.