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interests / rec.puzzles / Sliding puzzle without borders

SubjectAuthor
* Sliding puzzle without bordersJose Oliveira
+- Re: Sliding puzzle without bordersRichard Heathfield
`* Re: Sliding puzzle without bordersAnton Shepelev
 `* Re: Sliding puzzle without bordersJose Oliveira
  `- Re: Sliding puzzle without bordersAnton Shepelev

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Sliding puzzle without borders

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Subject: Sliding puzzle without borders
From: oliver63...@gmail.com (Jose Oliveira)
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 by: Jose Oliveira - Tue, 28 Dec 2021 00:13 UTC

What is called a sliding puzzle without borders?
(like asteroids game)
(a peace leaving to the left appears on the right, etc.)

You can play a 3x3 and 4x4 here example here:
https://arcalusitana.fun/MuseuZX/index.html?section=games82&program=Klox%20(2021)%20[ZarSoft].tap

Re: Sliding puzzle without borders

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From: rjh...@cpax.org.uk (Richard Heathfield)
Newsgroups: rec.puzzles
Subject: Re: Sliding puzzle without borders
Date: Tue, 28 Dec 2021 09:22:12 +0000
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 by: Richard Heathfield - Tue, 28 Dec 2021 09:22 UTC

On 28/12/2021 00:13, Jose Oliveira wrote:
> What is called a sliding puzzle without borders?
> (like asteroids game)
> (a peace leaving to the left appears on the right, etc.)

If the playing field window's left is joined to its right OR the top to
the bottom, the playing field is isomorphic to the surface of a
cylinder. If both, it is isomorphic to the surface of a torus. If you
twist one or other you get a Moebius strip. If both, a Klein bottle.

--
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within

Re: Sliding puzzle without borders

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From: anton....@g{oogle}mail.com (Anton Shepelev)
Newsgroups: rec.puzzles
Subject: Re: Sliding puzzle without borders
Date: Tue, 28 Dec 2021 18:16:22 +0300
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 by: Anton Shepelev - Tue, 28 Dec 2021 15:16 UTC

Jose Oliveira:

> What is called a sliding puzzle without borders?
> (like asteroids game) (a peace leaving to the left ap-
> pears on the right, etc.)

Puzzles featuring wrapped space of toroidal topology?
Puzzles on a wrapping plane?

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Re: Sliding puzzle without borders

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Subject: Re: Sliding puzzle without borders
From: oliver63...@gmail.com (Jose Oliveira)
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 by: Jose Oliveira - Tue, 28 Dec 2021 16:44 UTC

A terça-feira, 28 de dezembro de 2021 à(s) 15:16:25 UTC, Anton Shepelev escreveu:
> Puzzles featuring wrapped space of toroidal topology?
> Puzzles on a wrapping plane?

- It's a sliding puzzle like the 15 puzzle
- It's a torus puzzle
- I's not like a Rubik's cube in 2D because it has a hole (one piece is missing).

Does it have any special name?

3x3 and 4x4 example here:
https://arcalusitana.fun/MuseuZX/index.html?section=games82&program=Klox%20(2021)%20[ZarSoft].tap

Re: Sliding puzzle without borders

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From: anton....@g{oogle}mail.com (Anton Shepelev)
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Subject: Re: Sliding puzzle without borders
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 by: Anton Shepelev - Tue, 28 Dec 2021 17:15 UTC

Jose Oliveira:

> - It's a sliding puzzle like the 15 puzzle
> - It's a torus puzzle
> - I's not like a Rubik's cube in 2D because
> it has a hole (one piece is missing).
>
> Does it have any special name?

Not that I know of. I think you may call it a 15 puzzle in
a horizontally and vertically wrapping field of adjustable
size and with the goal of ordering the chips.

> 3x3 and 4x4 example here:
> https://arcalusitana.fun/MuseuZX/index.html?section=games82&program=Klox%20(2021)%20[ZarSoft].tap

It's a ZX Spectrum game, a modern game, and one written in
`Pascalated BASIC' -- great! I used to have a Soviet Spec-
trum clone called Pentagon 128, and spent many hours with it
playing Nether Earth, Prince of Persia, X-COM, Dizzy, Star
Heritage, Cybernoid, and various football and racing games
for two players. I had games on cassettes and 5-inch discs
(supported by the TR-DOS OS).

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