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Chess Viewer: Demonstration of XSL FO and XEP

The power of XSL lies in its ability to perform radical transformations of the XML data source. This page contains yet another proof for this fact: you can build a chessgame viewer with a stylesheet!

The source document is a transcription of a chess game played by Garry Kasparov against a chess supercomputer -- IBM Deep Blue. The game is encoded in a form resembling the well-known Portable Game Notation (PGN) format. The source is very compact: a sample game on this page [DeepBlue.xml] is less than 4 kBytes in size.

The stylesheet converts this arid text into a sequence of board diagrams, drawing every intermediate position as a graphical image (a special chess font is used). Applying a 23 kB stylesheet [chess.xsl], we get a 415 kBytes (!) FO stream [DeepBlue.fo]. These numbers give an idea of how deep the transformation is.

The final step of the whole procedure consists in converting the result into PDF using XEP. The resulting PDF file [DeepBlue.pdf] is much smaller than the source FO stream -- less than 90 kBytes. (XEP implements PDF compression).

We hope XSL fans will enjoy this example; and XSL foes will acknowledge its power!

More chess games created by the same stylesheet:

 
Description

FO Source  

PDF PostScript
 
  Fischer-Euwe.xml
Robert Fischer - Max Euwe
Fischer-Euwe.fo  Fischer-Euwe.pdf 
Fischer-Euwe.ps 
  Fischer-Tal.xml
Robert Fischer - Mikhail Tal
Fischer-Tal.fo  Fischer-Tal.pdf 
Fischer-Tal.ps 
  Kasparov-Karpov.xml
Garry Kasparov - Anatoly Karpov
Kasparov-Karpov.fo  Kasparov-Karpov.pdf 
Kasparov-Karpov.ps 

We have used an unabridged chess notation; the original PGN data are even more concise. We know it is possible to process even the short chess notation by XSL, and gladly leave this exercise to volunteers .


 

News

July 15, 2014
XEP 4.23 released

Improved Sec. 508 accessibility:
new RenderX extensions;
relaxed input requirements; several bugfixes in SVG;
DocBench: oXygen Editor 16
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August 28, 2013
VisualXSL 2.4.5 released

Cell spanning, conditional rows. Reusable/referable blocks. Conditional and Choose blocks. New property fields, improved UI.
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August 8, 2013
XEP 4.22 released

External PDF injection:
entire document, specific page;
improved Sec. 508 accessibility;
bugfixes in SVG gradients;
DocBench: oXygen Editor 15
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October 25, 2012
XEP 4.21 released

Extended Sec. 508 accessibility,
improvements in bidi algorithm,
XEPOUT diagnostics, bugfixes,
DocBench: oXygen Editor 14.1
More news...


July 23, 2012
XEP 4.20 released

New Java and Windows installers,
multicolumn footnote balancing,
GNU FreeFonts, bugfixes,
DocBench: oXygen XML Editor 14
More news...


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