45˚ from corner 1 to corner 4, tunnel→ground→tunnel
<ul><li><a href="//commons.wikimedia.org/wiki/File:BSicon_utSTR3%2B1.svg" title="File:BSicon utSTR3+1.svg">BSicon_utSTR3+1.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Useddenim" title="User:Useddenim">Useddenim</a></li>
<li><a href="//commons.wikimedia.org/w/index.php?title=File:BSicon_uextSTR14lr.svg&amp;action=edit&amp;redlink=1" class="new" title="File:BSicon uextSTR14lr.svg (page does not exist)">BSicon uextSTR14ea.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Xeror" title="User:Xeror">Xeror</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a></li></ul>
2013-05-20 18:56
<p>This file was derived from:
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<ul><li> <a href="//commons.wikimedia.org/wiki/File:BSicon_utSTR3%2B1.svg" title="File:BSicon utSTR3+1.svg">BSicon utSTR3+1.svg</a>: <a href="//commons.wikimedia.org/wiki/File:BSicon_utSTR3%2B1.svg" class="image"><img alt="BSicon utSTR3+1.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/BSicon_utSTR3%2B1.svg/50px-BSicon_utSTR3%2B1.svg.png" decoding="async" width="50" height="50" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/BSicon_utSTR3%2B1.svg/75px-BSicon_utSTR3%2B1.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/BSicon_utSTR3%2B1.svg/100px-BSicon_utSTR3%2B1.svg.png 2x" data-file-width="500" data-file-height="500"></a></li>
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