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'''[[Main Page|Home]] * [[Engines]] * Protector'''
[[FILE:042 Dharma Protector (9228057604).jpg|border|right|thumb| [https://en.wikipedia.org/wiki/Dharmapala Dharma Protector] <ref>[https://en.wikipedia.org/wiki/Dharmapala Dharma Protector], [https://en.wikipedia.org/wiki/Mahabodhi_Temple Mahabodhi Temple], [https://en.wikipedia.org/wiki/Bodh_Gaya Bodh Gaya] <ref>, [https://www.flickr.com/photos/anandajoti/9228057604/ Flickr Image] by [https://www.flickr.com/people/64337707@N07 Anandajoti Bhikkhu], [https://en.wikipedia.org/wiki/Penang Penang], [https://en.wikipedia.org/wiki/Malaysia Malaysia], March 16, 2013, [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons]</ref> ]]
'''Protector''',<br/>
=Tournament Play=
Protector participated at the [[TCEC Season 6]], the [[TCEC Season 7]], and over the board the [[WCCC 2015]] and [[WCSC 2015]] in [[Leiden University|Leiden]], operated by [[Timo Haupt]], who was also responsible for the [[Opening Book|book lines]]. At the WCCC, Protector played strongly and shared the third place with [[HiarcsHIARCS]] with 5/8, only losing from [[Komodo]]. At the uniform hardware WCSC Protector also shared the third place, now with Komodo, both 4½/7, behind [[Shredder]] and [[Ginkgo]].
=Photos & Games=
==WCSC 2015==
[[FILE:ProtectorHiarcsWCSC2015.JPG|none|border|text-bottom|link=WCSC 2015]]
[[WCSC 2015]], round 2, [[Harvey Williamson]] and [[Timo Haupt]] in [[Protector]] vs. [[HiarcsHIARCS]] waiting for 20.Qa8+
<pre>
[Event "WCSC 2015"]
[Round "2.4"]
[White "Protector"]
[Black "HiarcsHIARCS"]
[Result "1/2-1/2"]
=Acknowledgment=
Protector is based on many great ideas from the following people: [[Fabien Letouzey]] (pvnodes, [[Tapered Eval|blending of opening and endgame values]], eval params), [[Thomas Gaksch]] ([[PV Extensions|pvnode extensions]], [[Futility Pruning#Extendedfutilitypruning|extended futility pruning]], space attack eval), [[Robert Hyatt]] ([[Shared Hash Table#Lockless|consistent hashtable entries]]), [[Stefan Meyer-Kahlen]] ([[UCI]]), [[Gerd Isenberg]] <ref>Thank you! ([[Gerd Isenberg]], March 16, 2013) My own contribution to [[Magic Bitboards]] was the line-wise forerunner, dubbed [[Kindergarten Bitboards]], also tried with "random" factors, while [[Lasse Hansen]] had the idea to hash both lines simultaneously. I was initially skeptical whether the huge tables pay off.</ref> /[[Lasse Hansen]] ([[Magic Bitboards|magic bitboards]]), [[Marco Costalba]]/[[Tord Romstad]]/[[Joona Kiiski]] ([[Glaurung]]/[[Stockfish]] sources), [[Ippolit|Igor/Yakov]] ([[RobboLito]] sources), [[Andrew Kadatch]]/[[Eugene Nalimov]] ([[Endgame Tablebases|endgame tablebases]]), Frank Rahde (testing) and Wolf Stephan Kappesser (Adaptations for [[Mac OS]]). Without their contributions Protector would not be what it is. Thank you so much.
