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B* and later PB* was implemented in [[HiTech]]. B*HiTech played the [[ACM 1993]]. [[C]] source code for first own experiments with B* Probability Search was posted by [[Antonio Torrecillas]] in [[CCC]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=24717 B* Probability Search (long)] by [[Antonio Torrecillas]], [[CCC]], November 04, 2008</ref>, further implemented in his experimental [[:Category:Open Source Engines|open source engine]] [[Rocinante]] written in [[Cpp|C++]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=29360 engine Rocinante is available] by [[Antonio Torrecillas]], [[CCC]], August 12, 2009</ref>.