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'''[[Main Page|Home]] * [[People]] * Lasse Hansen'''
'''Lasse Hansen''',<br/>
a Norwegian pocess engineer and computer chess programmer. Lasse had the initial idea of [[Magic Bitboards|magic bitboards]], to [[Hash Table#PerfectHashing|perfectly hash]] the up to twelve relevant occupied bits of both directions of a rook- or bishop movement simultaneously <ref>Lasse Hansen's [http://www.open-aurec.com/wbforum/viewtopic.php?t=5015 Initial idea], [[Computer Chess Forums|Winboard Forum]], June 14, [[Timeline#2006|2006]]</ref>. He also proposed a memory saving trick by a [[Magic Bitboards#PostMask|final intersection]] <ref>Lasse Hansen's [http://www.open-aurec.com/wbforum/viewtopic.php?topic_view=threads&p=185506&t=5441 postmask trick], [[Computer Chess Forums|Winboard Forum]], May 09, 2008</ref>. Lasse Hansen is author of the chess program [[Sillycon]].
=Forum Posts=
==2005 ...==
* [http://www.open-aurec.com/wbforum/viewtopic.php?t=5015 Fast(er) bitboard move generator] by [[Lasse Hansen]], [[Computer Chess Forums|Winboard Forum]], June 14, [[Timeline#2006|2006]] » [[Magic Bitboards]]
* [http://talkchess.com/forum/viewtopic.php?t=28545 On Zobrist keys] by [[Lasse Hansen]], [[CCC]], June 21, 2009
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=41351 Check detection and move generation using bitboards] by [[Lasse Hansen]], [[CCC]], December 06, 2011
* [http://www.talkchess.com/forum/viewtopic.php?t=49611 152k rook and bishop attacks using PEXT and PDEP] by [[Lasse Hansen]], [[CCC]], October 06, 2013 » [[BMI2]]
* [http://www.talkchess.com/forum/viewtopic.php?t=54704 Symmetric move generation using bitboards] by [[Lasse Hansen]], [[CCC]], December 20, 2014 » [[Move Generation]], [[Bitboard Serialization]]
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55275 On bitboard legal move generation] by [[Lasse Hansen]], [[CCC]], February 09, 2015 » [[Move Generation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=57417 Perft using nullmove] by [[Lasse Hansen]], [[CCC]], August 29, 2015 » [[Perft]]
=References=
<references />
'''[[People|Up one level]]'''
'''Lasse Hansen''',<br/>
a Norwegian pocess engineer and computer chess programmer. Lasse had the initial idea of [[Magic Bitboards|magic bitboards]], to [[Hash Table#PerfectHashing|perfectly hash]] the up to twelve relevant occupied bits of both directions of a rook- or bishop movement simultaneously <ref>Lasse Hansen's [http://www.open-aurec.com/wbforum/viewtopic.php?t=5015 Initial idea], [[Computer Chess Forums|Winboard Forum]], June 14, [[Timeline#2006|2006]]</ref>. He also proposed a memory saving trick by a [[Magic Bitboards#PostMask|final intersection]] <ref>Lasse Hansen's [http://www.open-aurec.com/wbforum/viewtopic.php?topic_view=threads&p=185506&t=5441 postmask trick], [[Computer Chess Forums|Winboard Forum]], May 09, 2008</ref>. Lasse Hansen is author of the chess program [[Sillycon]].
=Forum Posts=
==2005 ...==
* [http://www.open-aurec.com/wbforum/viewtopic.php?t=5015 Fast(er) bitboard move generator] by [[Lasse Hansen]], [[Computer Chess Forums|Winboard Forum]], June 14, [[Timeline#2006|2006]] » [[Magic Bitboards]]
* [http://talkchess.com/forum/viewtopic.php?t=28545 On Zobrist keys] by [[Lasse Hansen]], [[CCC]], June 21, 2009
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=41351 Check detection and move generation using bitboards] by [[Lasse Hansen]], [[CCC]], December 06, 2011
* [http://www.talkchess.com/forum/viewtopic.php?t=49611 152k rook and bishop attacks using PEXT and PDEP] by [[Lasse Hansen]], [[CCC]], October 06, 2013 » [[BMI2]]
* [http://www.talkchess.com/forum/viewtopic.php?t=54704 Symmetric move generation using bitboards] by [[Lasse Hansen]], [[CCC]], December 20, 2014 » [[Move Generation]], [[Bitboard Serialization]]
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55275 On bitboard legal move generation] by [[Lasse Hansen]], [[CCC]], February 09, 2015 » [[Move Generation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=57417 Perft using nullmove] by [[Lasse Hansen]], [[CCC]], August 29, 2015 » [[Perft]]
=References=
<references />
'''[[People|Up one level]]'''
