Check out Symmetric Chess, our featured variant for March, 2024.

Enter Your Reply

The Comment You're Replying To
George Duke wrote on Wed, Aug 5, 2009 04:51 PM UTC:
It tends not to be noticed that C960 castling is a 2/3 reduction, because of the other accompanying reduction for Bishop-same-colour. Instead of every King placement, C960 permits only 56 of the 168 respecting the two Rooks' positioning. (In general, on 8x8 fixed castling is better, and by 8x10 free castling is better -- but that's an educated value judgment.) Since ShatranjShuffle2880 has no castling, it has 3 times the arrays available over C960, wherewith Rooks to King placements are not mattering. Hence the exact times 3, what we were trying to understand.
(1) Incidentally with mirrors 168x2 = 336, and that number 336  keeps recurring, chiefly just because it is 8x7x6, such as at Man & Beasts 04,
http://www.chessvariants.org/index/displaycomment.php?commentid=23281.
(2) Technically 960/40320 = 0.0238 = 1/42, the fraction being exact. So C960 uses only 1/42 of pure (8 factorial), representing every possible permutation, and most of the 960 are still ugly as a bulldog.

Edit Form

Comment on the page Shatranj

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.