Ziggurat

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Ziggurat, a chess engine by David Norris which has been under development since its first release as WinChess and Windows Chess in the first Microsoft Entertainment Pack in 1989. A group of Microsoft developers believed that, in order for Windows to succeed, a grassroots effort to create simple but fun entertainment titles needed to be made, and thus "Bogus Software" was born. The byline for Bogus Software was that all of our applications could be "written in ten days plus a couple of two day follow-ups".

=Description= The present Ziggurat is a UCI chess engine re-written from the ground up in C that uses the PVS/ZWS search algorithm, aspiration windows, the null move heuristic, magic bitboards, and limited razoring.

=Photos and Games= Ziggurat played the WCSC 2017, here the round 4 game Chess Ebbiz vs. Ziggurat with Bruno Bras and David Norris operating their engines [Event "WCSC 2017"] [Site "Leiden"] [Date "2017.07.01"] [Round "4.3"] [White "Chess Ebbiz 9"] [Black "Ziggurat"] [Result "0-1"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1 b6 10.Be3 Bb7 11.f3 b5 12.a4 b4 13.Nd5 Nxd5 14.Qxd5 Bxd5 15.Ra2 Bxb3 16.Rg1 Bxa2 17.Re1 Be6 18.Rf1 Nd7 19.Rf2 Bg5 20.Kg1 Bxe3 21.Kf1 Qb6 22.c3 Bxf2 23.Bd3 Qe3 24.b3 Qe1# 0-1

=Screenshot= Early Ziggurat Window

=See also=
 * Fortress
 * Stonewall

=Forum Posts=
 * A good option could be the old Ziggurat of David Norris by Arturo Ochoa, CCC, October 03, 2000
 * Ziggurat by Deepak Nityanandam, CCC, March 08, 2004
 * Ziggurat CE by David C. Norris by Norbert Raimund Leisner, CCC, June 26, 2013

=External Links=

Chess Engine

 * Ziggurat 0.22: Download
 * Ziggurat at CCRL 40/40
 * WinChess v1.01 : David Norris : Free Download, Borrow, and Streaming : Internet Archive

Misc

 * Ziggurat from Wikipedia
 * Ziggurat (disambiguation) from Wikipedia
 * Ziggurat algorithm from Wikipedia

=References= Up one Level