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Requires a Z-Code interpreter. Visit IFWiki for download links.
I Had A Dream
the essay that inspired this
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This game requires an interpreter program - refer to the game's documentation for details. (Compressed with the Unix-style .tar.gz "tarball" format. Free unpacking tools are available for most platforms.)

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Logic Puzzle Sampler

by Andrew Plotkin profile


Web Site

(based on 5 ratings)
1 review

About the Story

A sample game which demonstrates evaluation of statements. You can enter a statement about the game world, like "The red pyramid is on the table", and the game will determine whether it's true or false.

Game Details

Editorial Reviews

Baf's Guide

Less a game than an attempt to code up a system that can rigorously handle and account for logical paradoxes (of the "This sentence is false" variety) in a way that improves on the idea that a statement must either be true or false. If you're not into advanced math--and possibly even if you are--this will make your head hurt.

-- Duncan Stevens


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4 of 4 people found the following review helpful:
The wrinked paper is red, May 3, 2012
by Victor Gijsbers (The Netherlands)

Logic Puzzle Sampler is not a game; it describes itself more accurately as a toy, and it is also a programming example that comes with Inform 6 source code. As a toy it will probably not hold your attention very long, but as a piece of Inform programming, it is worthy of respect -- and could perhaps even be useful, in a somewhat bizarre game.

Playing with Logic Puzzle Sampler consists in manipulating a SHRDLU-like world of blocks and balls, and writing sentences about this world on sheets of paper. If the sentences are true, the paper turns green; if they are false, the paper turns red. Of course, the game accepts only a very limited set of sentences, but this is still impressive.

Even more impressive is the fact that you can write sentences about the colours of the pieces of paper themselves. And yes, this does allow you to have some self-referential fun -- luckily, Logic Puzzle Sampler has not restricted itself to a two-valued logic!

As the about-text indicates, the model beneath the toy is somewhat limited, and doesn't always analyse the situation perfectly. (Spoiler - click to show)For instance, if A says "B is green"; B says "C is green"; and C says "B is red"; the game will correctly turn B and C grey, but it will then incorrectly turn A grey as well, while it should simply be red. Still, what it can do is striking and well worth a look for those who are interested in such things.

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Pieces of Games by Ron Newcomb
Sometimes the best way to understand a type of puzzle or interaction is a pithy, stand-alone example of it.

This is version 6 of this page, edited by Zarf on 7 November 2010 at 1:20am. - View Update History - Edit This Page - Add a News Item - Delete This Page