Check out Atomic Chess, our featured variant for November, 2024.

Enter Your Reply

The Comment You're Replying To
George Duke wrote on Mon, Dec 3, 2007 05:47 PM UTC:Excellent ★★★★★
Or are all the hexagonal variants ''funny-looking'' pentagonal ones? Ralph Betza's Rectahex Chess (2003) concludes ''Hexagonal Chess can be played quite simply on normal rectangular board.'' Betza's resolving hex dynamics there worsens visualization, but Rectahex is excellent for Betza's satiric, clever transformation. This Penturanga marginally improves ease of visualizing interpretatively-hex movements, in acceptable technique for claiming novelty at sophisticated stage as this, pursuant thousands of forms. Differently -- hey, there are hundreds hexagonal chesses, so why not a hundred pentagonal ones -- US Patent No. 4357018 [Go to USPTO 'Number Search'] 02.Nov.1982 to Murray Calvert, of London, Ontario, Canada, has CV of ''interlocking chains of regular pentagons in side by side abutment,'' intended for play of Chess, Checkers and Dominoes. So, Charles Gilman's ''board of genuine pentagons'' has been done before. Another one US Patent No. 3981505 ''Irregular Pentagons'' 21.Sept.1976 to Marc Odier, Paris, France, is more puzzle-mechanism device than actual CV. It improves on Odier's prior USP3608906 28.Sept.1971 and France Patent No. 1582023. Another one 14.August.1883 (125 years back) USPatent 282990 to Percy Johnson, Marlborough, Mass., USA, also has chess embodiment played on pentagonal spaces. Chess Variant Page also linked a Pentagonal chess several years ago I cannot find right away. What goes around comes around.

Edit Form

Comment on the page Penturanga

Conduct Guidelines
This is a Chess variants website, not a general forum.
Please limit your comments to Chess variants or the operation of this site.
Keep this website a safe space for Chess variant hobbyists of all stripes.
Because we want people to feel comfortable here no matter what their political or religious beliefs might be, we ask you to avoid discussing politics, religion, or other controversial subjects here. No matter how passionately you feel about any of these subjects, just take it someplace else.
Avoid Inflammatory Comments
If you are feeling anger, keep it to yourself until you calm down. Avoid insulting, blaming, or attacking someone you are angry with. Focus criticisms on ideas rather than people, and understand that criticisms of your ideas are not personal attacks and do not justify an inflammatory response.
Quick Markdown Guide

By default, new comments may be entered as Markdown, simple markup syntax designed to be readable and not look like markup. Comments stored as Markdown will be converted to HTML by Parsedown before displaying them. This follows the Github Flavored Markdown Spec with support for Markdown Extra. For a good overview of Markdown in general, check out the Markdown Guide. Here is a quick comparison of some commonly used Markdown with the rendered result:

Top level header: <H1>

Block quote

Second paragraph in block quote

First Paragraph of response. Italics, bold, and bold italics.

Second Paragraph after blank line. Here is some HTML code mixed in with the Markdown, and here is the same <U>HTML code</U> enclosed by backticks.

Secondary Header: <H2>

  • Unordered list item
  • Second unordered list item
  • New unordered list
    • Nested list item

Third Level header <H3>

  1. An ordered list item.
  2. A second ordered list item with the same number.
  3. A third ordered list item.
Here is some preformatted text.
  This line begins with some indentation.
    This begins with even more indentation.
And this line has no indentation.

Alt text for a graphic image

A definition list
A list of terms, each with one or more definitions following it.
An HTML construct using the tags <DL>, <DT> and <DD>.
A term
Its definition after a colon.
A second definition.
A third definition.
Another term following a blank line
The definition of that term.