The Centre Cannot Hold
(Published on 27. August 2024, 12:34 by Abdul the Killer)
Cells containing numbers exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
Solution code: Row 1
Comments
on 2. September 2024, 21:46 by rhodri
I was convinced I’d probably made a mistake, right up until the last few digits. Harrowing! But I did it!
on 29. August 2024, 21:59 by damo_89
I did not go to the classes and found this quite hard!
on 28. August 2024, 09:03 by mishaaku
Excellent puzzle. I used way too many complicated tricks the first time through the puzzle as I was overly enjoying myself... only to realize I missed a much more obvious start. Was quite fun to see that my first pass of conclusions were true on the more straightforward second attempt. Lots of very nice chains of logic hiding in here: well done!
on 27. August 2024, 13:55 by ozgaz
Luckily i went to all the classes. Nice to have the classic back for a change. Thanks ATK and congrats on the CTC video for last week's puzzle.
on 27. August 2024, 13:54 by kublai
Final Exam?? I hope not. Please keep the tests coming!
on 27. August 2024, 00:04 by Abdul the Killer
Hi.
I thought I'd go a bit retro this week.
This puzzle strikes me as being weirdly difficult -- my solve required liberal application of many little tricks and "secrets" that I've picked up since my first puzzle.
It feels a little like a final exam which is not too hard if you went to all the classes.
Enjoy.
