Ziggy IS

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Home * Engines * Ziggy

Ziggy Stardust [1]

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 [2]. 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

Publications

Forum Posts

External Links

References

  1. David Bowie in the early 1970s, by Rik Walton, Ziggy Stardust (character) from Wikipedia
  2. Hrafn Eiríksson (2011). Investigation of Multi-Cut Pruning in Game-Tree Search. B.Sc. thesis, Reykjavík University, pdf

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