Timeline for Four triangles passing through every dot of a 7x7 grid
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 30, 2021 at 21:24 | comment | added | Florian F | I did the computer search. It is the only solution modulo symmetries and permutations of the triangles. And btw if you go for non-right triangles you need 6 of them. | |
| Jun 28, 2021 at 11:10 | comment | added | Jerry Dean | @DmitryKamenetsky I planned to change it every 3 months or so to keep track of how I'm doing here ;) (That's why I wrote the date as well) | |
| Jun 28, 2021 at 10:56 | comment | added | Dmitry Kamenetsky | @JerryDean I think it's time you change the quote in your profile ;) | |
| Jun 28, 2021 at 9:56 | comment | added | Jerry Dean | @DmitryKamenetsky Thanks! Nice puzzle! | |
| Jun 28, 2021 at 9:55 | comment | added | Jerry Dean | @Ausername That's quite unlucky... I feel bad for you :( | |
| Jun 28, 2021 at 9:55 | vote | accept | Dmitry Kamenetsky | ||
| Jun 28, 2021 at 9:54 | comment | added | Dmitry Kamenetsky | Correct and well done! Yes that green triangle is very hard to find. If we use the approach in the previous 5x5 puzzle then it is not too hard to find a solution with one dot missing. But getting that extra dot is the challenge here. | |
| Jun 28, 2021 at 9:52 | comment | added | Jaap Scherphuis | That last triangle (green in your picture) is so hard to find / easy to overlook! This is a great puzzle and well done on finding the solution. I'm almost sure it is the only solution (up to rotation/reflection). | |
| Jun 28, 2021 at 9:31 | history | answered | Jerry Dean | CC BY-SA 4.0 |