Timeline for Invalid Jigsaw Sudoku Layout
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 2, 2024 at 1:46 | comment | added | codewarrior0 | I hadn't heard it called LoL before. The law sounds like a special case of what Simon and Mark call "Set Theory" - dividing the grid into partitions whose digit counts are known, and then applying set operations like intersection and disjunction to prove facts about some smaller partitions. | |
| Mar 1, 2024 at 22:41 | comment | added | JCO | This question was 1st posed (sudokuxtra.com/forum/read.php?2,759) and subsequently pursued by Mathimagics. Key links: (forum.enjoysudoku.com/…) and (forum.enjoysudoku.com/…). Mathimatics approach was computational. I've recently become interested in this matter from the viewpoint of a manual solver. I had the help of an extremely strong sudoku player to analyse the hardest puzzles shown in that links. The above puzzle is a sample that I created to introduce the subject. | |
| Mar 1, 2024 at 18:41 | comment | added | codewarrior0 | This answer is beaten by one that presents a general solution that works on any jigsaw layout, not just the one in the OP. I'm curious whether that general solution is what's in the reference OP intends to provide! | |
| Mar 1, 2024 at 9:12 | comment | added | Matthieu M. | @Oliphaunt: The main benefit of not accepting an answer is that new better answers may pop up. This is particularly true on Stack Overflow where beginners are tempted to accept the first answer that "solves" their problem, but generally are not in a position to judge the quality of the answers, and the first answer may be of particularly poor quality. On Puzzling... I don't know. And this solution looks very good already: short, clear diagrams, clear explanations. It'd be tough to beat. | |
| Mar 1, 2024 at 9:11 | comment | added | Oliphaunt | Okay, I was wrong. Looks like etiquette differs from one SE site to the other and I was not aware of the Puzzling.SE etiquette. Sorry, @JCO! Relevant meta post: puzzling.meta.stackexchange.com/questions/6533/… (and the duplicate linked from there) | |
| Mar 1, 2024 at 7:46 | comment | added | PDT | @Oliphaunt I think not accepting the answer immediately can have its benifits in terms of rep points for both the op and answerer as it still draws people into the puzzle, as users will go ‘o nice an unsolved problem let me have a go’ only to be effectively clickbaited but I don’t see anything wrong with immediately accepting the answer that being said. | |
| Mar 1, 2024 at 2:52 | comment | added | Beastly Gerbil | @Oliphaunt there is no requirement to do that at all, the OP can accept the answer whenever. It's completely up to them | |
| Mar 1, 2024 at 0:54 | comment | added | Oliphaunt | @JCO Next time, please also wait at least 24h before marking an answer as accepted. | |
| Feb 29, 2024 at 21:49 | comment | added | JCO | Nice solution! Thanks for solving the puzzle! A reference on this subject will be added later (as a comment). Since alternative solutions may still appear, I will postpone that comment. | |
| Feb 29, 2024 at 21:33 | vote | accept | JCO | ||
| Feb 29, 2024 at 19:42 | history | answered | codewarrior0 | CC BY-SA 4.0 |