Comments on: Circular Sudoku? http://zaissianlogic.com/gaming/2007/08/circular-sudoku/ Fri, 01 Jul 2011 05:36:35 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: armando http://zaissianlogic.com/gaming/2007/08/circular-sudoku/comment-page-1/#comment-697 armando Tue, 14 Aug 2007 23:18:41 +0000 http://zaissianlogic.com/2007/08/14/circular-sudoku/#comment-697 If you want to try out something new in sudoku, try shendoku, using the sudoku rules but playing two people, one against the other, like battleshipps. They have a free version to download at http://www.shendoku.com/sample.pdf . Anything else they are bringing out or they are working on you can find at www.shendoku.com or at they´r blog www.shendoku.blogspot.com . Have fun, I am. If you want to try out something new in sudoku, try shendoku, using the sudoku rules but playing two people, one against the other, like battleshipps. They have a free version to download at http://www.shendoku.com/sample.pdf . Anything else they are bringing out or they are working on you can find at http://www.shendoku.com or at they´r blog http://www.shendoku.blogspot.com . Have fun, I am.

]]> By: Eric http://zaissianlogic.com/gaming/2007/08/circular-sudoku/comment-page-1/#comment-698 Eric Tue, 14 Aug 2007 15:03:11 +0000 http://zaissianlogic.com/2007/08/14/circular-sudoku/#comment-698 I would guess that the fewer squares you get to begin with, the more likely it is that multiple solutions exist. But, setting up an unambiguous puzzle is a fairly deterministic process. You simply have to start placing numbers one by one (and filling all logically deduced squares along the way) while only making a square given when no more can be deduced. I would say that their generation algorithm is faulty. One of your 8 ambiguous squares should have been given. However, maybe they take a normal puzzle and remove a given or two to make it even harder. But, in these cases there will always be multiple solutions. I've heard that the symmetry thing is an easy way to hand-generate a puzzle, but I've never done it. I'm sure you could find an explanation on the web. I would guess that the fewer squares you get to begin with, the more likely it is that multiple solutions exist. But, setting up an unambiguous puzzle is a fairly deterministic process. You simply have to start placing numbers one by one (and filling all logically deduced squares along the way) while only making a square given when no more can be deduced. I would say that their generation algorithm is faulty. One of your 8 ambiguous squares should have been given. However, maybe they take a normal puzzle and remove a given or two to make it even harder. But, in these cases there will always be multiple solutions.

I’ve heard that the symmetry thing is an easy way to hand-generate a puzzle, but I’ve never done it. I’m sure you could find an explanation on the web.

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