Need some assistance again

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Need some assistance again

Postby Fonzarelle » Tue Sep 21, 2021 3:23 am

I tried every strategy I can think of. Can anyone point me in the right direction.

https://pasteboard.co/PPNrz9ObWB5E.png
Fonzarelle
 
Posts: 9
Joined: 15 August 2021

Re: Need some assistance again

Postby Leren » Tue Sep 21, 2021 6:55 am

217364985.8.1.....654.2.731..5......738691524..6.8.3.7.6.....5..42..617957.2....3

Code: Select all
*------------------------------------------*
| 2   1  7   | 3     6     4   | 9   8  5  |
| 39  8  39  | 1     7-5  c57  | 246 46 26 |
| 6   5  4   | 89    2     89  | 7   3  1  |
|------------+-----------------+-----------|
| 14  29 5   | 47    347   237 | 68  19 68 |
| 7   3  8   | 6     9     1   | 5   2  4  |
| 14  29 6   | 45    8     25  | 3   19 7  |
|------------+-----------------+-----------|
| 389 6  139 | 4789  1347 b37  | 248 5  28 |
| 38  4  2   | 58   a35    6   | 1   7  9  |
| 5   7  19  | 2     14    89  | 468 46 3  |
*------------------------------------------*

XY Wing: (5=3) r8c5 - (3=7) r7c6 - (7=5) r2c6 => - 5 r2c5; stte

Leren
Leren
 
Posts: 5020
Joined: 03 June 2012

Re: Need some assistance again

Postby Vorlauf » Tue Sep 21, 2021 3:27 pm

As Leren points out, after XY wing is applied, the puzzle solves quickly.

Here is same 357 XY wing with the pivot changed. This XY wing results in two 7s being eliminated.

Code: Select all
.--------------.-----------------.-------------.
| 2    1   7   | 3     6     4   | 9    8   5  |
| 39   8   39  | 1   c57     5-7 | 246  46  26 |
| 6    5   4   | 89    2     89  | 7    3   1  |
:--------------+-----------------+-------------:
| 14   29  5   | 47    347   237 | 68   19  68 |
| 7    3   8   | 6     9     1   | 5    2   4  |
| 14   29  6   | 45    8     25  | 3    19  7  |
:--------------+-----------------+-------------:
| 389  6   139 | 4789  134-7 a37 | 248  5   28 |
| 38   4   2   | 58   b35    6   | 1    7   9  |
| 5    7   19  | 2     14    89  | 468  46  3  |
'--------------'-----------------'-------------'


The puzzle is quickly solved following either of the xy wings.

Vorlauf
Vorlauf
 
Posts: 9
Joined: 08 September 2021

Re: Need some assistance again

Postby Fonzarelle » Tue Sep 21, 2021 8:51 pm

Got it and totally understand. Thank you both for your help.
Fonzarelle
 
Posts: 9
Joined: 15 August 2021


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