dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

very hard rated by draw and play

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles
View previous topic :: View next topic  
Author Message
peter urhegyi



Joined: 26 Oct 2020
Posts: 28

PostPosted: Wed Aug 25, 2021 9:35 pm    Post subject: very hard rated by draw and play Reply with quote

I think this must be a mistake by the internal rating function. It doesn't need any vh step.
Code:

+-------+-------+-------+
| 1 . . | . . 7 | 9 . 4 |
| . 3 . | . 8 . | . . . |
| . . . | . . 6 | . 2 . |
+-------+-------+-------+
| 4 . 6 | . . . | 8 . . |
| . . . | . 5 . | . . 7 |
| 7 . . | 6 . 9 | . . . |
+-------+-------+-------+
| . . 5 | . . . | . . 3 |
| . 7 . | . 4 . | . 1 . |
| 8 . 9 | . . 2 | . . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
Back to top
View user's profile Send private message
Mogulmeister



Joined: 03 May 2007
Posts: 1151

PostPosted: Thu Aug 26, 2021 8:29 am    Post subject: Reply with quote

Yes, I agree Peter. The rating algorithm got foxed?
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Sat Sep 04, 2021 11:30 am    Post subject: very hard rated by draw and play Reply with quote

Code:

+---------------------+----------------------+-----------------------+
| 1      6      d28   | 235      23      7   | 9       c358     4    |
| 259    3       47   | 12459    8       145 | 1567     567     156  |
| 59     89      47   | 13459    139     6   | 1357     2      b158  |
+---------------------+----------------------+-----------------------+
| 4      259     6    | 127      127     3   | 8        59      1259 |
|f239    29    fd1*23 | 48       5       48  |f136     f369     7    |
| 7      258     1238 | 6        12      9   | 1345     345     125  |
+---------------------+----------------------+-----------------------+
| 26     14      5    | 1789     1679    18  | 2467     8-9     3    |
|e236    7      d23*  | 589      4       58  | 256      1      a89   |
| 8      14      9    | 1357     1367    2   | 4567     4567    56   |
+---------------------+----------------------+-----------------------+

(9=8)r8c9 – r3c9 = r1c8 – (8=23*1*)r185c3 – (3)r8c1 = (31*69)5c1378 => - 9r7c8; btte
Back to top
View user's profile Send private message AIM Address
dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Sat Sep 04, 2021 3:46 pm    Post subject: Reply with quote

Hi Clement, I think you got tricked by the wrong rating! Your grid can be solved using just basics. There's a hidden pair 29 in row 2 (corrected on 09/05/21, it previously said 'column 2') which leads to a unique 5 in column 1 and then from there it can eventually be solved.

Last edited by dongrave on Sun Sep 05, 2021 12:59 pm; edited 2 times in total
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Sat Sep 04, 2021 4:58 pm    Post subject: Reply with quote

dongrave wrote:
Hi Clement, I think you got tricked by the wrong rating! Your grid can be solved using just basics. There's a hidden pair 29 in column 2 which leads to a unique 5 in column 1 and then from there it can eventually be solved.
Sure, my grid is incomplete r5c2 is solved it is 2 leaving a naked pair 59 in r5c28 which completes it. Shame upon me Embarassed
Back to top
View user's profile Send private message AIM Address
Mogulmeister



Joined: 03 May 2007
Posts: 1151

PostPosted: Sat Sep 04, 2021 6:27 pm    Post subject: Reply with quote

I think this is a grid that Keith might approve of. For a p&p solver there are a lot of hidden pairs and a triple and this requires a lot of diligence to hack your way out just using basics.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group