Stuck on a Puzzle 27/11/20

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Stuck on a Puzzle 27/11/20

Postby Fortesque92 » Thu Nov 26, 2020 10:26 pm

This book published by Collins doesn't muck about! Can anyone see a next step I can take to solve the rest of this puzzle?

sukoku 27112020 low q.jpg
sukoku 27112020 low q.jpg (135.16 KiB) Viewed 94 times
Fortesque92
 
Posts: 30
Joined: 30 June 2020

Re: Stuck on a Puzzle 27/11/20

Postby Leren » Fri Nov 27, 2020 2:16 am

Code: Select all
*--------------------------------------------------*
| 8   9    457   | 457   37  2     | 3567  467 1   |
| 6   3    2     | 4579  79  1     | 8     47  59  |
| 14  1457 1457  | 45789 6   34578 | 357   2   359 |
|----------------+-----------------+---------------|
| 2   1568 1358  | 168   4   9     | 1356  168 7   |
| 13  1568 9     | 1678  2   678   | 4     168 35  |
| 7   1468 148   | 3     5   68    | 16    9   2   |
|----------------+-----------------+---------------|
| 9   2    34-17 | 45-7  8   345-7 |*17   *17  6   |
| 134 147  6     | 2     137 347   | 9     5   8   |
| 5   178  178   | 679   179 67    | 2     3   4   |
*--------------------------------------------------*

A naked pair in r7c78 (marked *) removes a 1 and some 7's from Row 7.

Code: Select all
*--------------------------------------------------*
| 8   9    457  | 457   37   2      | 3567 467 1   |
| 6   3    2    | 4579  79   1      | 8    47  59  |
| 14  1457 1457 |#45789 6    345-78 | 357  2   359 |
|---------------+-------------------+--------------|
| 2   1568 1358 | 168   4    9      | 1356 168 7   |
| 13  1568 9    | 1678  2   *678    | 4    168 35  |
| 7   1468 148  | 3     5   *68     | 16   9   2   |
|---------------+-------------------+--------------|
| 9   2    34   | 45    8    345    | 17   17  6   |
| 134 147  6    | 2     137  34-7   | 9    5   8   |
| 5   178  178  | 679   179 *67     | 2    3   4   |
*--------------------------------------------------*

A naked triple (678) in r569c6 (marked *) removes two 7's and an 8 from Column 6. This exposes a single 8 in Row 3 at r3c4 (marked #). When you place that you will find that other singles will appear until the puzzle is solved.

Leren
Leren
 
Posts: 4066
Joined: 03 June 2012

Re: Stuck on a Puzzle 27/11/20

Postby Fortesque92 » Fri Nov 27, 2020 7:20 am

Thank you kindly! I gotta get better at spotting those triples!
Fortesque92
 
Posts: 30
Joined: 30 June 2020


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