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The [[Free Software Foundation#GPL|GPL]] [[:Category:Open Source Engines|open source chess engine]] [[Smash]] by [[Maurizio Sambati]] demonstrates an ABDADA implementation in [[Cpp|C++]] <ref>[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=165470&t=18611 Re: interested in making single procesor program multi] by [[Alessandro Scotti]], [[CCC]], December 29, 2007</ref> <ref>[http://www.cli.di.unipi.it/~sambati/prog/smash.tar.bz2 smash.tar.bz2 search.cpp]</ref> .