Timeline for answer to Polyominos packing into a square by Jaap Scherphuis
Current License: CC BY-SA 4.0
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7 events
| when toggle format | what | by | license | comment | |
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| Feb 12, 2023 at 20:34 | vote | accept | Maff | ||
| Feb 9, 2023 at 12:18 | history | edited | Jaap Scherphuis | CC BY-SA 4.0 |
added 694 characters in body
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| Feb 7, 2023 at 20:41 | comment | added | franck vivien | you're perfectly right. I had in mind covering the grid using one horizontal p9 + one vertical p9 + one L, but of course the straight lines can be replaced by L! So I am ok with your minimum grid | |
| Feb 7, 2023 at 19:43 | comment | added | Jaap Scherphuis | @franckvivien You can use L-shaped pieces, and a size 9 polyomino in an L shape can cover 5 rows and 5 columns, so three can cover all. I don't see why one of them would need to be straight. | |
| Feb 7, 2023 at 19:12 | comment | added | franck vivien | I was about to publish a study on the lower limit using the same reasoning. However, we can increase your lower limit of 1 because rot13(bar bs lbhe 3 cbylzvab bs fvmr 9 vf n fgenvtgu yvar (be lbh pnag' pbire gur jubyr 15k15 tevq). Va guvf pnfr, gurer ner bayl 6 fcnprf yrsg ba guvf yvar, juvpu vf abg rabhtu gb cynpr gur erznvavat 8 cbylzvab. Urapr ybjre yvzvg vf ng yrnfg 16) | |
| Feb 7, 2023 at 17:11 | history | edited | Jaap Scherphuis | CC BY-SA 4.0 |
added 16 characters in body
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| Feb 7, 2023 at 16:56 | history | answered | Jaap Scherphuis | CC BY-SA 4.0 |