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Tyrone Shuz
Joined: 29 Jun 2013 Posts: 11
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Posted: Tue Jul 30, 2013 8:56 pm Post subject: Help a noob w/remote pair chains |
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I have a hard time finding the "end" of the chain. From my otherwise fantastic Sudoku app recommended to me here, in the tutorial it says:
"When searching for the end of the chain it is convenient to color the cells based on their distance, either even or odd, from a starting cell" then color even distances one color, odd another.
I don't know how you calculate distance, and in the example they show, it appears that all the pairs are an even distance away from each other. I assume if you're counting from R7c1 to R3c3, it's a distance of 6 cells? |
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Pat
Joined: 23 Feb 2010 Posts: 207
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Posted: Wed Jul 31, 2013 2:12 pm Post subject: |
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Tyrone Shuz wrote: |
I don't know how you calculate distance
I assume if you're counting from R7c1 to R3c3, it's a distance of 6 cells? |
no
distance = number of steps along the chain |
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Tyrone Shuz
Joined: 29 Jun 2013 Posts: 11
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Posted: Wed Jul 31, 2013 4:00 pm Post subject: |
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Oh my, I'm afraid I'm still in the dark. If you were going to highlight each cell with the two applicable candidates, obviously those in the same house would get a different color, but how do you know how to color those outside the house? |
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Tyrone Shuz
Joined: 29 Jun 2013 Posts: 11
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Posted: Wed Jul 31, 2013 5:44 pm Post subject: Do you mean... |
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Cells that see each other? Two in the same house would be different, then scan the grid for a cell that one of them sees, and color it the opposite? |
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keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
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