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A VH rated too hard by Draw/Play 110521

 
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immpy



Joined: 06 May 2017
Posts: 479

PostPosted: Fri Nov 05, 2021 5:55 pm    Post subject: A VH rated too hard by Draw/Play 110521 Reply with quote

Hello all. enjoy the puzzle...

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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TomC



Joined: 30 Oct 2020
Posts: 169
Location: Wales

PostPosted: Fri Nov 05, 2021 7:30 pm    Post subject: Reply with quote

Strange how the ratings get fooled sometimes

A 246 XY wing solved it for me
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Mogulmeister



Joined: 03 May 2007
Posts: 1017

PostPosted: Fri Nov 05, 2021 10:49 pm    Post subject: Reply with quote

Draw/Play clearly has a blind spot - this is one of quite a few.
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immpy



Joined: 06 May 2017
Posts: 479

PostPosted: Sat Nov 06, 2021 2:30 am    Post subject: Reply with quote

LOL!!! Blind spots indeed! I went through the motions with Draw/Play just to see if I could pinpoint it's weakness. It clearly has trouble identifying Naked Triples, or at least in this case it had trouble. Then it tries to give a hint, but fails doing that, stating that the puzzle is either too hard or perhaps it is an invalid puzzle with multiple solutions. ROTFLMAO!!!

cheers...immp
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immpy



Joined: 06 May 2017
Posts: 479

PostPosted: Sat Nov 06, 2021 2:32 am    Post subject: Reply with quote

That just made my night!! Still can't stop laughing...
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immpy



Joined: 06 May 2017
Posts: 479

PostPosted: Sat Nov 06, 2021 2:42 am    Post subject: Reply with quote

It's a wonder it doesn't stump itself sometimes with some of it's creations. LOL!! A new difficulty category perhaps may need to be added...STUMP THE STUPID!!!
I really am in tears laughing now...whew...

cheers...immp
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Mogulmeister



Joined: 03 May 2007
Posts: 1017

PostPosted: Sat Nov 06, 2021 7:52 am    Post subject: Reply with quote

Laughing

Well said Immp.
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dongrave



Joined: 06 Mar 2014
Posts: 453

PostPosted: Sat Nov 06, 2021 9:19 pm    Post subject: Reply with quote

immpy wrote:
LOL!!! Blind spots indeed! I went through the motions with Draw/Play just to see if I could pinpoint it's weakness. It clearly has trouble identifying Naked Triples, or at least in this case it had trouble. Then it tries to give a hint, but fails doing that, stating that the puzzle is either too hard or perhaps it is an invalid puzzle with multiple solutions. ROTFLMAO!!!

cheers...immp


A few years ago when I realized that Sam had flaws in his computer program, I contacted Marty and offered to send him a simple algorithm in the form of pseudo-code that would correct this problem! (I had programmed computers for 40 years and I could see that his algorithm was obviously flawed.) Marty was interested - but he said that he could not promise anything. I sent him a message anyway with an algorithm that Sam could at least reference to see what he was doing wrong! Unfortunately nothing ever came of it. He's obviously been using the same old flawed algorithm that he used back when this site was founded.
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Mogulmeister



Joined: 03 May 2007
Posts: 1017

PostPosted: Sun Nov 07, 2021 1:56 pm    Post subject: Reply with quote

Thatís very interesting dongrave and bravo for sure. As you probably know, Keith and Marty never seemed to be able to get Sam G-J onside over certain issues. This site certainly has the feel of the Blind Watchmaker* about it.


*Richard Dawkins book.
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