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which compares favourable with [[Belle|Belle's]], considering machine power. He Alex Szabo used the '''Technology Curve''' as introduced by [[James Gillogly]] <ref>[[James Gillogly]] ('''1978'''). ''Performance Analysis of the Technology Chess Program''. Ph.D. Thesis. Tech. Report CMU-CS-78-189, [[Carnegie Mellon University]], [http://reports-archive.adm.cs.cmu.edu/anon/anon/usr/ftp/scan/CMU-CS-77-gillogly.pdf CMU-CS-77 pdf]</ref>, a graph of [[Playing Strength|playing strength]] versus machine power aka [https://en.wikipedia.org/wiki/Binary_logarithm binary logarithm] of [[Nodes per Second|nodes per second]], as a tool for measuring the effectiveness of [[Knowledge|knowledge]] encoding, and found in this respect [[Nuchess]] as the best chess program of that time <ref>[[Alexander Szabo]] ('''1984'''). ''[https://circle.ubc.ca/handle/2429/24780 Computer-Chess Tactics and Strategy]''. M.Sc. Thesis, [https://en.wikipedia.org/wiki/University_of_British_Columbia University of British Columbia]</ref>.

<ref>[https://ilk.uvt.nl/icga/journal/docs/References.pdf [ICGA Journal#RefDB|ICGA Reference Database] (pdf)]</ref>