Stuck! Help, probably something obvious.

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Stuck! Help, probably something obvious.

Postby ECon15 » Sat Mar 21, 2020 6:44 pm

Please help.
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ECon15
 
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Re: Stuck! Help, probably something obvious.

Postby dxSudoku » Mon Apr 06, 2020 3:00 pm

There is a Skyscraper with the possible 7 candidates.

I did a video on Skyscrapers which will help you:

https://www.youtube.com/watch?v=HUcUhDi0qSI&t=5s

Sorry for the shameless plug but I worked really hard on the video.

Good Luck!
dxSudoku
 
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Re: Stuck! Help, probably something obvious.

Postby Leren » Tue Apr 07, 2020 12:34 am

Code: Select all
*-------------------------------------------*
| 4     9   126   | 7  5  12  | 8   126 3   |
| 23    12  8     | 6  9  123 | 7   5   4   |
| 2367  5   12367 | 4  8  123 | 12  126 9   |
|-----------------+-----------+-------------|
| 35   b27  4     | 8  12 9   | 35 c17  6   |
| 1     8   35    | 35 6  7   | 4   9   2   |
| 279   6   279   | 35 12 4   | 35  8   17  |
|-----------------+-----------+-------------|
| 59    3   159   | 2  7  6   | 19  4   8   |
| 69-7  4   69-7  | 1  3  8   | 29 d27  5   |
| 8    a127 127   | 9  4  5   | 6   3   1-7 |
*-------------------------------------------*

Here is the Skyscraper in cells a-b-c-d. One of cells a or d must be true, so you can eliminate three 7's as shown and the puzzle then solves easily.

Leren
Leren
 
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