https://www.chessprogramming.org/index.php?title=Pawn_Spans&feed=atom&action=history
Pawn Spans - Revision history
2024-03-28T13:37:42Z
Revision history for this page on the wiki
MediaWiki 1.30.1
https://www.chessprogramming.org/index.php?title=Pawn_Spans&diff=18634&oldid=prev
GerdIsenberg at 07:25, 3 April 2020
2020-04-03T07:25:29Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 07:25, 3 April 2020</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l100" >Line 100:</td>
<td colspan="2" class="diff-lineno">Line 100:</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>=External Links=</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>=External Links=</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:Steps Ahead|Steps Ahead]] - Live in Japan 1986, [https://en.wikipedia.org/wiki/YouTube YouTube] Video</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:Steps Ahead|Steps Ahead]] - Live in Japan 1986, [https://en.wikipedia.org/wiki/YouTube YouTube] Video</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>: lineup: [<del class="diffchange diffchange-inline">https</del>:<del class="diffchange diffchange-inline">//en.wikipedia.org/wiki/Mike_Mainieri </del>Mike Mainieri], [[:Category:Michael Brecker|Michael Brecker]], [[:Category:Darryl Jones|Darryl Jones]], [[:Category:Mike Stern|Mike Stern]], [[:Category:Steve Smith|Steve Smith]]</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>: lineup: [<ins class="diffchange diffchange-inline">[</ins>:<ins class="diffchange diffchange-inline">Category:Mike Mainieri|</ins>Mike Mainieri<ins class="diffchange diffchange-inline">]</ins>], [[:Category:Michael Brecker|Michael Brecker]], [[:Category:Darryl Jones|Darryl Jones]], [[:Category:Mike Stern|Mike Stern]], [[:Category:Steve Smith|Steve Smith]]</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>: {{#evu:https://www.youtube.com/watch?v=NjFfu7HKOro|alignment=left|valignment=top}}</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>: {{#evu:https://www.youtube.com/watch?v=NjFfu7HKOro|alignment=left|valignment=top}}</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 colspan="2" class="diff-lineno" id="mw-diff-left-l106" >Line 106:</td>
<td colspan="2" class="diff-lineno">Line 106:</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:Hans Kmoch]]</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:Hans Kmoch]]</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:Steps Ahead]]</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:Steps Ahead]]</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:Mike Mainieri]]</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>[[Category:Michael Brecker]]</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:Michael Brecker]]</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:Darryl Jones]]</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:Darryl Jones]]</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:Steve Smith]]</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:Steve Smith]]</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:Mike Stern]]</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:Mike Stern]]</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Pawn_Spans&diff=10791&oldid=prev
GerdIsenberg at 15:27, 26 February 2019
2019-02-26T15:27:09Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 15:27, 26 February 2019</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>'''[[Pawn Pattern and Properties|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>'''[[Pawn Pattern and Properties|Up one Level]]'''</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:Hans Kmoch]]</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>[[Category:Steps Ahead]]</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:Steps Ahead]]</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Pawn_Spans&diff=9841&oldid=prev
GerdIsenberg at 21:36, 11 January 2019
2019-01-11T21:36:15Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 21:36, 11 January 2019</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l99" >Line 99:</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;"></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>=External Links=</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>=External Links=</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 class="diffchange diffchange-inline">https</del>:<del class="diffchange diffchange-inline">//en.wikipedia.org/wiki/Steps_Ahead </del>Steps Ahead] - Live in Japan 1986, [https://en.wikipedia.org/wiki/YouTube YouTube] Video</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">[</ins>:<ins class="diffchange diffchange-inline">Category:Steps Ahead|</ins>Steps Ahead<ins class="diffchange diffchange-inline">]</ins>] - Live in Japan 1986, [https://en.wikipedia.org/wiki/YouTube YouTube] Video</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>: lineup: [https://en.wikipedia.org/wiki/Mike_Mainieri Mike Mainieri], [[:Category:Michael Brecker|Michael Brecker]], [[:Category:Darryl Jones|Darryl Jones]], [[:Category:Mike Stern|Mike Stern]], [[:Category:Steve Smith|Steve Smith]]</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>: lineup: [https://en.wikipedia.org/wiki/Mike_Mainieri Mike Mainieri], [[:Category:Michael Brecker|Michael Brecker]], [[:Category:Darryl Jones|Darryl Jones]], [[:Category:Mike Stern|Mike Stern]], [[:Category:Steve Smith|Steve Smith]]</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>: {{#evu:https://www.youtube.com/watch?v=NjFfu7HKOro|alignment=left|valignment=top}}</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>: {{#evu:https://www.youtube.com/watch?v=NjFfu7HKOro|alignment=left|valignment=top}}</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>'''[[Pawn Pattern and Properties|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>'''[[Pawn Pattern and Properties|Up one Level]]'''</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:Steps Ahead]]</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>[[Category:Michael Brecker]]</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:Michael Brecker]]</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:Darryl Jones]]</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:Darryl Jones]]</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:Steve Smith]]</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:Steve Smith]]</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:Mike Stern]]</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:Mike Stern]]</div></td></tr>
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GerdIsenberg
https://www.chessprogramming.org/index.php?title=Pawn_Spans&diff=7594&oldid=prev
GerdIsenberg at 21:38, 23 October 2018
2018-10-23T21:38:18Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 21:38, 23 October 2018</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l97" >Line 97:</td>
<td colspan="2" class="diff-lineno">Line 97:</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>* [[Fill Algorithms]]</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>* [[Fill Algorithms]]</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>* [[Pawn Fills]]</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>* [[Pawn Fills]]</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;"></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;">=External Links=</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;">* [https://en.wikipedia.org/wiki/Steps_Ahead Steps Ahead] - Live in Japan 1986, [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;">: lineup: [https://en.wikipedia.org/wiki/Mike_Mainieri Mike Mainieri], [[:Category:Michael Brecker|Michael Brecker]], [[:Category:Darryl Jones|Darryl Jones]], [[:Category:Mike Stern|Mike Stern]], [[:Category:Steve Smith|Steve Smith]]</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=NjFfu7HKOro|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>'''[[Pawn Pattern and Properties|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>'''[[Pawn Pattern and Properties|Up one Level]]'''</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:Michael Brecker]]</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;">[[Category:Darryl Jones]]</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;">[[Category:Steve Smith]]</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;">[[Category:Mike Stern]]</ins></div></td></tr>
</table>
GerdIsenberg
https://www.chessprogramming.org/index.php?title=Pawn_Spans&diff=1550&oldid=prev
GerdIsenberg: Created page with "'''Home * Board Representation * Bitboards * Pawn Pattern and Properties * Pawn Spans''' '''Pawn Spans''' and Fill-Pattern of pawns are use..."
2018-05-10T09:19:09Z
<p>Created page with "'''<a href="/Main_Page" title="Main Page">Home</a> * <a href="/Board_Representation" title="Board Representation">Board Representation</a> * <a href="/Bitboards" title="Bitboards">Bitboards</a> * <a href="/Pawn_Pattern_and_Properties" title="Pawn Pattern and Properties">Pawn Pattern and Properties</a> * Pawn Spans''' '''Pawn Spans''' and Fill-Pattern of <a href="/Pawn" title="Pawn">pawns</a> are use..."</p>
<p><b>New page</b></p><div>'''[[Main Page|Home]] * [[Board Representation]] * [[Bitboards]] * [[Pawn Pattern and Properties]] * Pawn Spans'''<br />
<br />
'''Pawn Spans''' and Fill-Pattern of [[Pawn|pawns]] are used as a base for many other [[Pawn Structure|pawn structure]] related stuff, to determine [[Passed Pawns (Bitboards)|passers]], [[Candidates (Bitboards)|candidates]], [[Isolated Pawns (Bitboards)|isolanis]] etc. set-wise. <br />
<br />
=Type of Spans=<br />
Every pawn has a '''frontspan''' with [[Stop Square|stop]] - and '''telestop''' squares, and a '''rearspan'''. Further the pawn has a '''lee'''- and '''luff'''-side, while rook-pawns miss the lee-side.<br />
<pre><br />
white pawn d5:<br />
. . . f . . . .<br />
. . . r . . . . movement<br />
. . . o . . . . ^<br />
l e e P l u f f |<br />
. . . r . . . .<br />
. . . e . . . .<br />
. . . a . . . .<br />
. . . r . . . .<br />
</pre><br />
A span of each individual pawn reflects either its [[Distance|distance]] to promotion (frontspan), or distance to its back rank (rearspan).<br />
<span id="FrontAndRearspans"></span><br />
==Front- and Rearspans== <br />
Front- and rearspans are the [[Pawn Fills|front- and rearfills]] shifted one step further in the fill-direction:<br />
<pre><br />
white frontspans black rearspans<br />
1 1 1 . . 1 1 1 1 1 1 1 . 1 1 1<br />
1 1 1 . . 1 1 1 1 . 1 1 . . . 1<br />
1 1 1 . . 1 1 1 . . . 1 . . . .<br />
1 1 1 . . 1 1 1 . . . . . . . .<br />
. 1 1 . . . 1 1 ^ . . . . . . . .<br />
. 1 1 . . . 1 1 | . . . . . . . .<br />
. . . . . . . . . . . . . . . .<br />
. . . . . . . . . . . . . . . .<br />
north<br />
white pawns black pawns<br />
. . . . . . . . . . . . . . . .<br />
. . . . . . . . . 1 . . . 1 1 .<br />
. . . . . . . . 1 . 1 . . . . 1<br />
. . . . . . . . . . . 1 . . . .<br />
1 . . . . 1 . . . . . . . . . .<br />
. . 1 . . . . . . . . . . . . .<br />
. 1 1 . . . 1 1 . . . . . . . .<br />
. . . . . . . . . . . . . . . .<br />
south<br />
white rearspans black frontspans<br />
. . . . . . . . | . . . . . . . .<br />
. . . . . . . . v . . . . . . . .<br />
. . . . . . . . . 1 . . . 1 1 .<br />
. . . . . . . . 1 1 1 . . 1 1 1<br />
. . . . . . . . 1 1 1 1 . 1 1 1<br />
1 . . . . 1 . . 1 1 1 1 . 1 1 1<br />
1 . 1 . . 1 . . 1 1 1 1 . 1 1 1<br />
1 1 1 . . 1 1 1 1 1 1 1 . 1 1 1<br />
</pre><br />
<br />
<pre><br />
U64 wFrontSpans(U64 wpawns) {return nortOne (nortFill(wpawns));}<br />
U64 bRearSpans (U64 bpawns) {return nortOne (nortFill(bpawns));}<br />
U64 bFrontSpans(U64 bpawns) {return soutOne (soutFill(bpawns));}<br />
U64 wRearSpans (U64 wpawns) {return soutOne (soutFill(wpawns));}<br />
</pre><br />
* Pawns still member of their frontspan have at least one pawn behind on the same file.<br />
* Pawns still member of their rearspan have at least one pawn in front on the same file.<br />
* All pawns which are member of the opponent frontspans (or frontfill) have a '''mechanical obstruction''' and are '''unfree'''.<br />
<br />
==Interspans== <br />
The intersection of white and black frontspans is called interspan. Obviously interspans can only occur on closed files. [[Rook|Rooks]] on interspans may have a hard time, if the attacked opponent pawns are safe. Their vertical mobility is restricted and they may vulnerable to get trapped and attacked. On the other hand, if supported by other attacking pieces, there might be successful attacks against [[Weak Pawns|weak pawns]] and the especially the [[King|king]].<br />
<pre><br />
white frontspan & black frontspan = interspan<br />
1 1 1 . . 1 1 1 . . . . . . . . . . . . . . . .<br />
1 1 1 . . 1 1 1 . . . . . . . . . . . . . . . .<br />
1 1 1 . . 1 1 1 . 1 . . . 1 1 . . 1 . . . 1 1 .<br />
1 1 1 . . 1 1 1 1 1 1 . . 1 1 1 1 1 1 . . 1 1 1<br />
. 1 1 . . . 1 1 & 1 1 1 1 . 1 1 1 = . 1 1 . . . 1 1<br />
. 1 1 . . . 1 1 1 1 1 1 . 1 1 1 . 1 1 . . . 1 1<br />
. . . . . . . . 1 1 1 1 . 1 1 1 . . . . . . . .<br />
. . . . . . . . 1 1 1 1 . 1 1 1 . . . . . . . .<br />
</pre><br />
<span id="StopandDistantStop"></span><br />
=Stop and Telestop= <br />
[[Stop Square|Stop squares]] are the [[Pawn Pushes (Bitboards)|push move targets]] of any pawn.<br />
<pre><br />
U64 wStop(U64 wpawns) {return nortOne (wpawns);}<br />
U64 bStop(U64 bpawns) {return soutOne (bpawns);}<br />
</pre><br />
Thus, the frontfills of the stop squares are the frontspans of the pawns:<br />
<pre><br />
U64 wFrontSpan(U64 wpawns) {return nortFill(wStop(wpawns));}<br />
U64 bFrontSpan(U64 bpawns) {return soutFill(bStop(bpawns));}<br />
</pre><br />
Telestop squares all the squares of the frontspan, except the stop squares<br />
<pre><br />
U64 wTeleStops(U64 wpawns) {return wFrontSpans(wStop(wpawns)) ^ wStop(wpawns);}<br />
U64 bTeleStops(U64 bpawns) {return bFrontSpans(bStop(bpawns)) ^ bStop(bpawns);}<br />
</pre><br />
<br />
=See also=<br />
* [[Attack Spans]]<br />
* [[Fill Algorithms]]<br />
* [[Pawn Fills]]<br />
<br />
'''[[Pawn Pattern and Properties|Up one Level]]'''</div>
GerdIsenberg