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Subject: Re: Gathering Pro and Cons to X-FEN (Chess960)

Author: Pallav Nawani

Date: 07:21:25 07/22/05

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On July 22, 2005 at 08:09:07, Reinhard Scharnagl wrote:

>It would be interesting to learn from people related to Chess960 why there
>actually should be a need to introduce a new and not unique way to encode
>positions into FEN (actually introduced by ne Shredder-FRC) when there has
>been already the X-FEN method full downward compatible to FEN used for years
>without problems.
>
>X-FEN doc at: http://www.chessbox.de/xfen_e.html
>
>Reinhard.

Hi Reinhard,

As I can see it, both X-Fen and Shredder Fen have their advantages.

X-Fen:
+ Compatible with existing chess960 software
+ Represents classical chess fen in the correct way
- By looking at the fen, it is difficult to tell whether it is for Chess960 or
Shuffle chess
- Old Gui's will take chess 960 fen as shuffle chess, some might even become
confused.

Shredder Fen:
+ By looking at fen, you can tell instantly it is chess 960
+ Old chess GUI's will reject the fen immediately, and thus will not get
confused. For example, Fritz 8 will (hopefully :) ) reject the Shredder fen
immediately, while it will wrongly think that a X-Fen fen is shuffle chess fen.
- Classical chess position is represented in 2 different ways.
- Incompatible with existing chess960 software

Pallav



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