https://www.chessprogramming.org/index.php?title=Horizon&feed=atom&action=history
Horizon - Revision history
2024-03-28T09:22:32Z
Revision history for this page on the wiki
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https://www.chessprogramming.org/index.php?title=Horizon&diff=15751&oldid=prev
GerdIsenberg at 22:00, 3 December 2019
2019-12-03T22:00:06Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 22:00, 3 December 2019</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l66" >Line 66:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon_%28disambiguation%29 Horizon (disambiguation) from Wikipedia]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon_%28disambiguation%29 Horizon (disambiguation) from Wikipedia]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon_effect Horizon effect from Wikipedia]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon_effect Horizon effect from Wikipedia]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[:Category:Indigo Jam Unit|Indigo Jam Unit]] - Horizon, [https://en.wikipedia.org/wiki/YouTube YouTube] Video</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">: {{#evu:https://www.youtube.com/watch?v=YqO-iM125QQ|alignment=left|valignment=top}}</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=References=  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=References=  </div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>'''[[Engines|Up one Level]]'''</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>'''[[Engines|Up one Level]]'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:WinBoard]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:WinBoard]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Indigo Jam Unit]]</ins></div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Horizon&diff=9540&oldid=prev
GerdIsenberg at 22:58, 30 December 2018
2018-12-30T22:58:40Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 22:58, 30 December 2018</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l60" >Line 60:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Chess Engine==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Chess Engine==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Horizon Chess]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Horizon Chess]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>: [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - <del class="diffchange diffchange-inline">EngineTechnicalDescription</del>]</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>: [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - <ins class="diffchange diffchange-inline">Engine Technical Description]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Horizon&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Horizon] in [[CCRL|CCRL 40/40]</ins>]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Misc==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Misc==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon Horizon from Wikipedia]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [https://en.wikipedia.org/wiki/Horizon Horizon from Wikipedia]</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Horizon&diff=9539&oldid=prev
GerdIsenberg at 22:48, 30 December 2018
2018-12-30T22:48:26Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 22:48, 30 December 2018</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l8" >Line 8:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Initially running atop a much-modified version of [[Colin Frayn|Colin Frayn's]] open-source [[Beowulf]] infrastructure, there's very little of Beowulf that remains within Horizon and less with each release <ref>[http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Acknowledgements]</ref>.  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Initially running atop a much-modified version of [[Colin Frayn|Colin Frayn's]] open-source [[Beowulf]] infrastructure, there's very little of Beowulf that remains within Horizon and less with each release <ref>[http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Acknowledgements]</ref>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>=<del class="diffchange diffchange-inline">Search</del>=</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>=<ins class="diffchange diffchange-inline">Features</ins>=</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><ref>Features from [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - Engine Technical Description]</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><ref>Features from [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - Engine Technical Description]</ref></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">==Features==</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Iterative Deepening]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Iterative Deepening]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Aspiration Windows]] (Asymmetric on [[Side to move]])</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Aspiration Windows]] (Asymmetric on [[Side to move]])</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Horizon&diff=9538&oldid=prev
GerdIsenberg at 22:47, 30 December 2018
2018-12-30T22:47:13Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 22:47, 30 December 2018</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=Search=</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>=Search=</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><ref>Features from [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - <del class="diffchange diffchange-inline">EngineTechnicalDescription</del>]</ref></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ref>Features from [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - <ins class="diffchange diffchange-inline">Engine Technical Description</ins>]</ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Features==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Features==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Iterative Deepening]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* [[Iterative Deepening]]</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Horizon&diff=9537&oldid=prev
GerdIsenberg: Created page with "'''Home * Engines * Horizon''' FILE:SkyView2.PNG|border|right|thumb| Horizon - Sky View <ref>[http://commons.wikimedia.org/wiki/File:SkyView2.PNG Sky View..."
2018-12-30T22:44:41Z
<p>Created page with "'''<a href="/Main_Page" title="Main Page">Home</a> * <a href="/Engines" title="Engines">Engines</a> * Horizon''' FILE:SkyView2.PNG|border|right|thumb| Horizon - Sky View <ref>[http://commons.wikimedia.org/wiki/File:SkyView2.PNG Sky View..."</p>
<p><b>New page</b></p><div>'''[[Main Page|Home]] * [[Engines]] * Horizon'''<br />
<br />
[[FILE:SkyView2.PNG|border|right|thumb| Horizon - Sky View <ref>[http://commons.wikimedia.org/wiki/File:SkyView2.PNG Sky View 2] by gierszewski, 2005, Sunrise at [https://en.wikipedia.org/wiki/Calgary Calgary], [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]] <br />
<br />
'''Horizon''', (Horizon Chess)<br/><br />
a [[WinBoard]] compatible chess engine by primary author [[Ron Murawski]] and chess advisor and book author [[Jim Monaghan]]. <br />
Written in [[C]], the programming started in July 2001, first release was already in October 2001. <br />
Initially running atop a much-modified version of [[Colin Frayn|Colin Frayn's]] open-source [[Beowulf]] infrastructure, there's very little of Beowulf that remains within Horizon and less with each release <ref>[http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Acknowledgements]</ref>. <br />
<br />
=Search=<br />
<ref>Features from [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - EngineTechnicalDescription]</ref><br />
==Features==<br />
* [[Iterative Deepening]]<br />
* [[Aspiration Windows]] (Asymmetric on [[Side to move]])<br />
* [[Principal Variation Search]]<br />
* [[Move Ordering]] <br />
** [[Internal Iterative Deepening]]<br />
** [[Killer Heuristic]] with two [[Killer Move|Killers]] and one [[Mate Killers|Mate Killer]] per [[Ply]]<br />
* [[Selectivity]]<br />
** [[Extensions#FractionalExtensions|Fractional Extensions / Reductions]]<br />
** [[Mate Threat Extensions]]<br />
** [[One Reply Extensions]]<br />
** [[Check Extensions]] ([[Discovered Check]])<br />
** [[Recapture Extensions]] <br />
** [[Passed Pawn Extensions|Passed Pawn Extensions (7th Rank)]]<br />
** [[Quiescence Search]] with [[Check Extensions]]<br />
** [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]] ([[Depth Reduction R|R]] 2-4.5, Up to 3 [[Null Move|Null Noves]] per Line)<br />
** [[Null Move Pruning#ZugzwangVerification|Null Move Verification]]<br />
** [[Futility Pruning]]<br />
** [[Razoring|Adaptive Razoring]] <br />
** [[Reductions]] (for non-dangerous moves)<br />
<br />
=Tournament Play=<br />
Horizon played the [[WCRCC 2007]] and [[WCRCC 2008]] Annual ACCA World Computer Rapid Chess Championship.<br />
<br />
=Selected Games=<br />
[[WCRCC 2008]], round 14, [[Horizon]] - [[Tornado]] <ref>[http://compchess.org/ACCAWCRCC/2008ACCAWCRCC/2008WCRCCResults.html 2008 Second Annual ACCA World Computer Chess Championships - Results - PGN-Download]</ref><br />
<pre><br />
[Event "WCRCC 2008"]<br />
[Site "Internet Chess Club"]<br />
[Date "2008.06.22"]<br />
[Round "14"]<br />
[White "Horizon"]<br />
[Black "Tornado"]<br />
[Result "1-0"]<br />
<br />
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 <br />
9.O-O a6 10.a4 b4 11.Nb1 c5 12.Nbd2 cxd4 13.exd4 Be7 14.Nc4 O-O 15.Be3 Ng4 <br />
16.h3 Nxe3 17.fxe3 Rc8 18.Qe2 Qc7 19.e4 Kh8 20.Rac1 f6 21.Nfd2 e5 22.Nb3 exd4 <br />
23.Nca5 Qb8 24.Nxb7 Rxc1 25.Rxc1 Qxb7 26.Bxa6 Qa7 27.Bb5 d3+ 28.Qf2 Qxf2+ <br />
29.Kxf2 f5 30.Bxd7 fxe4+ 31.Kg1 e3 32.Bb5 d2 33.Rb1 Bf6 34.Be2 g6 35.a5 Be5 <br />
36.Bf3 Bxb2 37.a6 Rf7 38.a7 Rxa7 39.Rxb2 Rd7 40.Rb1 Rd3 41.Kf1 h5 42.Bd1 Rc3 <br />
43.Ke2 h4 44.Nd4 Rc5 45.Nc2 Rg5 46.Nxe3 Rb5 47.Rb3 Rb8 48.Bc2 Kg7 49.Kxd2 Rb5<br />
1-0<br />
</pre><br />
=See also=<br />
* [[Horizon Effect]]<br />
* [[Horizon Node]]<br />
<br />
=External Links=<br />
==Chess Engine==<br />
* [http://www.horizonchess.com/pmwiki.php?n=Main.HomePage Horizon Chess - Main - Horizon Chess]<br />
: [http://www.horizonchess.com/pmwiki.php?n=Main.EngineTechnicalDescription Horizon Chess - Main - EngineTechnicalDescription]<br />
==Misc==<br />
* [https://en.wikipedia.org/wiki/Horizon Horizon from Wikipedia]<br />
* [https://en.wikipedia.org/wiki/Horizon_%28disambiguation%29 Horizon (disambiguation) from Wikipedia]<br />
* [https://en.wikipedia.org/wiki/Horizon_effect Horizon effect from Wikipedia]<br />
<br />
=References= <br />
<references /><br />
'''[[Engines|Up one Level]]'''<br />
[[Category:WinBoard]]</div>
GerdIsenberg