Checkerboard of black and white zones associated with a regular projection (or knot diagram) of a knot.
<ul><li><a href="//commons.wikimedia.org/wiki/File:KnotCheckerboard.png" title="File:KnotCheckerboard.png">KnotCheckerboard.png</a>: Christian Mercat</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Ninjatacoshell" title="User:Ninjatacoshell">Ninjatacoshell</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Ninjatacoshell" title="User talk:Ninjatacoshell"><span class="signature-talk">talk</span></a>)</li></ul>
CC BY-SA 3.0
<ul><li><a href="//commons.wikimedia.org/wiki/File:KnotCheckerboard.png" title="File:KnotCheckerboard.png">KnotCheckerboard.png</a></li></ul>