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[[FILE:ManRayObstruction.jpg|border|right|thumb|link=http://www.imj.org.il/en/collections/194569?itemNum=194569
| [[Arts#:Category:Man Ray|Man Ray]] - Obstruction, 1947 <ref>[http://www.imj.org.il/en/collections/194569?itemNum=194569 Man Ray - Obstruction, 1947], [https://en.wikipedia.org/wiki/Israel_Museum The Israel Museum]</ref> ]]
'''Obstruction Difference''',<br/>
=C Code=
The routine works for all lines, [[Ranks|ranks]], [[Files|files]], [[Diagonals|diagonals]] and [[Anti-Diagonals|anti-diagonals]] by applying appropriate line-masks, and could therefor used as a generalized routine with a line-direction parameter, or in [[C]] even passing a pointer to a structure with three (or multiples for several lines in parallel) bitboards per square and line, upper- and lower rays and the union of both.
<pre>
/*
