Ziggy IS

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Ziggy, an UCI compliant open source chess engine by Hrafn Eiríksson, written in Java. Ziggy represents the board with piece-lists supported by 15x8 vector attacks, and applies state of the art search enhancements like null move pruning, late move reductions, multi-cut, PVS, static exchange evaluation and a two-level transposition table, and served as test-bed for search experiments as topic in Eiríksson's B.Sc. thesis Investigation of Multi-Cut Pruning in Game-Tree Search. Eiríksson re-investigated multi-cut pruning with Ziggy, and found an enhancement to apply it only at expected Cut-nodes confirmed by the transposition table, that is a probe indicates a beta-cutoff without sufficient draft stored.

=Namesake=
 * Ziggy by Henk Kuyer and Auke Punter

=Publications=
 * Hrafn Eiríksson (2011). Investigation of Multi-Cut Pruning in Game-Tree Search. B.Sc. thesis, Reykjavík University, advisor Yngvi Björnsson, pdf

=Forum Posts=
 * Ziggy 0.7 by Hrafn Eiriksson (Iceland) by Norbert Raimund Leisner, CCC, March 06, 201
 * Ziggy 0.7 JA in test 	by Sylwy, CCC, March 07, 2012

=External Links=

Chess Engine

 * krummi/ChessEngine · GitHub
 * Index of /chess/engines/Jim Ablett/ZIGGY by Jim Ablett, hosted by Kirill Kryukov
 * Ziggy 0.7 in CCRL 40/4

Misc

 * Ziggy from Wikipedia
 * Ziggy (comic strip) from Wikipedia
 * Ziggy Stardust from Wikipedia
 * The Rise and Fall of Ziggy Stardust and the Spiders from Mars from Wikipedia
 * - Ziggy Stardust, live 1972, YouTube Video

=References= Up one level