Changes

Robert Houdart claims his engine is original <ref>[http://www.open-chess.org/viewtopic.php?f=3&t=534&start=20#p4798 Re: Why Is Houdini Not Entered In The WCCC??] by [[Robert Houdart]], [[Computer Chess Forums|Open Chess Forum]], August 04, 2010</ref>, and admits taking ideas from the open source programs [[Ippolit|Ippolit]]/[[RobboLito|Robbolito]], [[Stockfish]] and [[Crafty]] <ref>[http://www.cruxis.com/chess/houdini.htm Houdini Chess Engine - Acknowledgements]</ref> . Other programmers and forum members raised suspicions that Robert took ideas from the controversial Ippolit/Robbolito source code too literally as initial base of his program <ref>[http://www.open-chess.org/viewtopic.php?f=3&t=534&start=40#p5084 Re: Why Is Houdini Not Entered In The WCCC??] by [[Franklin Titus|kingliveson]], [[Computer Chess Forums|Open Chess Forum]], August 09, 2010</ref> <ref>[http://www.open-chess.org/viewtopic.php?f=3&t=534&start=40#p5089 Re: Why Is Houdini Not Entered In The WCCC??] by [[Robert Houdart]], [[Computer Chess Forums|Open Chess Forum]], August 10, 2010</ref> <ref>[http://www.open-chess.org/viewtopic.php?f=3&t=1647&start=10#p14724 Re: Computer Chess Biggest Liar] by [[Franklin Titus|kingliveson]], [[Computer Chess Forums|OpenChess Forum]], October 11, 2011</ref> <ref>[http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=427014#pid427014 Re: Interesting poll] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|Rybka Forum]], July 15, 2012</ref> .

The idea to index the [[Material Tables|material table]] in the same manner as [[RobboLito|Robbolito]], with combined counters of queens, rooks, light and dark bishops, knights and pawns, and to calculate piece counters from that table-index by a sequence of mod/div operations by {2,2,3,3,2,2,2,2,3,3,9,9} might be considered obvious after studying the mentioned source code, and if applying that scheme, there is hardly anything to avoid a sequence of almost identical [[x86]] machine code with same constants for [[General Setwise Operations#ReciprocalMultiplication|reciprocal multiplication]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=34578 Houdini - a cheap compile of Ippo/Robo] by [[Lance Perkins]], [[CCC|CCC - Computer Chess Club: Engine Origins]], May 29, 2010 (requires login)</ref>.

You mean 6 months until [[Strelka]] has been released to public. You do not know how much time did [[Jury Osipov|Yuri Osipov]] spent on RE, neither when he did start his RE project. For me it took barely one week. As [[Milos Stanisavljevic|Milos S.]] pointed out <ref>[http://talkchess.com/forum/viewtopic.php?topic_view=threads&p=435775&t=41236 Re: Lazy eval - test results] by [[Milos Stanisavljevic]], [[CCC]], December 01, 2011</ref> , you made RE very very easy because of starting your project from [[RobboLito|Robbolito]] codebase... Personally I see no problem with that (other than you not telling the truth).