Ok, no duplicate numbers in a cage is a rule for killer sudokus. But there is an L-shaped cage in August 23rd difficult puzzle (25) that can only be satisfied by the numbers 8,9,8 or 9,7,9...
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| killer sudoku duplicate numbers https://www.calcudoku.org/forum/viewtopic.php?f=18&t=307 |
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| Author: | sneaklyfox |
| Post subject: | killer sudoku duplicate numbers |
Ok, no duplicate numbers in a cage is a rule for killer sudokus. But there is an L-shaped cage in August 23rd difficult puzzle (25) that can only be satisfied by the numbers 8,9,8 or 9,7,9... |
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| Author: | pnm |
| Post subject: | Re: killer sudoku duplicate numbers |
sneaklyfox wrote: Ok, no duplicate numbers in a cage is a rule for killer sudokus. But there is an L-shaped cage in August 23rd difficult puzzle (25) that can only be satisfied by the numbers 8,9,8 or 9,7,9... Thanks for this, I realize now that by "merging" single cell cages I opened a can of worms :-( Bottom line is that the merging happens at the wrong stage of the process, will fix.. Patrick |
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| Author: | pharosian |
| Post subject: | Re: killer sudoku duplicate numbers |
sneaklyfox wrote: Ok, no duplicate numbers in a cage is a rule for killer sudokus. But there is an L-shaped cage in August 23rd difficult puzzle (25) that can only be satisfied by the numbers 8,9,8 or 9,7,9... I don't see why "no duplicate numbers in a cage" has to be a rule for Killer Sudoku in cases (such as the one you mention) where the cage straddles two 3x3 grids. There is thus no violation of the 1-9 unique values in any 3x3 or in any row or column... What am I missing? At the time I checked last, 48 people (including me) had solved the puzzle, so it doesn't seem to be a big deal... ![[confused]](./images/smilies/msp_confused.gif "Confused")
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| Author: | pnm |
| Post subject: | Re: killer sudoku duplicate numbers |
pharosian wrote: What am I missing? At the time I checked last, 48 people (including me) had solved the puzzle, so it doesn't seem to be a big deal... It's a convention thing. At some point people settled on "no duplicates". And once you know that that is a rule, it'll help you solve it of course. On one particular forum someone even wrote "your puzzles are _not_ Killer Sudoku, use a different name" (!) (math/puzzle people can be quite particular ![[mellow]](./images/smilies/msp_mellow.gif "Mellow") )
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