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groston

Post subject: Ashamed to ask for help

Posted: Wed Jul 19, 2023 4:28 am

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Joined: Fri Jun 23, 2023 4:24 am
Posts: 24

The attached image is Toroidal Sudoku 332 from puzzlemix.com. I have been able to solve the last several dozen of these toroidal puzzles without issue, but I am stuck on this one. I am quite confident that the puzzle has been copied correctly, but I cannot figure out what to do next. I have looked for the obvious, hidden doubles, hidden triples, etc., but have found nothing. Any suggestions?

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Toroidal_322.jpg [ 148.01 KiB | Viewed 3795 times ]

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Post subject: Re: Ashamed to ask for help

Posted: Wed Jul 19, 2023 9:58 pm

Grand Master

Joined: Wed Apr 16, 2008 1:16 am
Posts: 1044
Location: Sydney, Australia

Looks fun. I can see a couple of things.

4 in c2 only in yellow at r12c2 this leads to a hidden single c1

naked triple {127} in blue at r2c3 + r45c2: r2c2 sees all those -> no 2,7 in r2c2

Don't know how much they help....

If they don't, post again with the new spot. We used to do 'tag' killers once. Reminds me of those days.

Cheers
Ed

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groston

Post subject: Re: Ashamed to ask for help

Posted: Wed Jul 19, 2023 10:29 pm

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Joined: Fri Jun 23, 2023 4:24 am
Posts: 24

Major unawareness on my part. Yes, your point about the 4s in column 2 is correct - thank you.

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