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}
</pre>
One may try some more index trickery for instance considering 3 ranks each, for an upper and lower half:,
<pre>
U64 rss[2][64][8]; // 8K
}
</pre>
One step further, to combine the occupancy to one six-bit index is already quite similar to [[Kindergarten Bitboards#FileAttacks|Kindergarten File Attacks]], in particular [[Zach Wegner|Zach Wegner's]] [[Kindergarten Bitboards#32-bit Versions|32-bit Version]] <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?topic_view=threads&p=26851&t=4523 Zach's tricky 32-bit approach] by [[Zach Wegner]], [[Computer Chess Forums|Winboard Forum]], August 22, 2006</ref>
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=73063 New RookAttacks() - possibly] by [[Michael Sherwin]], [[CCC]], February 12, 2020
