short inlet Mar 31, 2025, 10:54 AM

#

piece_j piece_j

#

probably a joke post

nova raptor Mar 31, 2025, 10:54 AM

#

this already conflicts with the naming conventions for pentominos, which are used sometimes here and there (in super streamer lobbies and the sort)

short inlet Mar 31, 2025, 11:02 AM

#

ok

#

wait how are all pentominos called actually

nova raptor Mar 31, 2025, 11:17 AM

#

https://en.wikipedia.org/wiki/Pentomino

Pentomino

A pentomino (or 5-omino) is a polyomino of order 5; that is, a polygon in the plane made of 5 equal-sized squares connected edge to edge. The term is derived from the Greek word for '5' and "domino". When rotations and reflections are not considered to be distinct shapes, there are 12 different free pentominoes. When reflections are considered d...

#

short inlet Mar 31, 2025, 12:04 PM

#

what about these though```

## ## ##

## # ##

   #  ##    #

#

well, J, Q, and S fit but

#

what about the inverse F and N

open herald Mar 31, 2025, 12:55 PM

#

Wikipedia calls them F' and N'

#

Mirrors weren't named by Golomb

#

As Golomb only named 12 free pentominoes

#

Also, you forgot Y'

nova raptor Mar 31, 2025, 1:03 PM

#

as does https://gamejolt.com/games/multimino/556683 and https://github.com/AxelFox149/Polyform-Beta/releases

serene yacht Mar 31, 2025, 1:03 PM

#

short inlet what about these though``` # ## ## ## ## #### ## # ## ### ...

in techmino theyre called E and M iirc

open herald Mar 31, 2025, 1:06 PM

#

https://tetris.wiki/Pentomino

Pentomino

A pentomino is a polyomino of five squares. The ancient pentomino puzzle uses free pentominoes.

serene yacht Mar 31, 2025, 1:07 PM

#

hmm

deft blaze Apr 5, 2025, 3:58 AM

#

you mean this?

#:piece_F:

## ## ##

## # ##