Bookup

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a professional chess opening database by Mike Leahy which keeps games, that is their moves along with optional annotations inside a tree structure. Since nodes in this tree are indexed by a kind of Zobrist key of a position, Bookup is able to immediately recognize transpositions, and is suited to learn and train openings and to investigate, analyze and expand opening books. Bookup was developed since the 80s, initially under MS-DOS, and was further developed and ported to Macintosh and x86 PCs running Mac OS and Windows with a modern GUI called Chess Opening Wizard (COW). While early Bookup was bundled with Zarkov as analysis engine, COW includes Stockfish, Crafty and Ruffian, and further supports any Chess Engine Communication Protocol (WinBoard) and UCI compatible engine for analysis and looking for contradictions between game statistics and current chess theory, dubbed backsolving.
 * Bookup**,

=See also=
 * Bookbuilder
 * Chess Opening Wizard
 * Deja Vu

=Forum Posts=

1990 ...

 * [|even more chess software reviews] by Eric Schiller, rgc, September 13, 1991 » Zarkov
 * [|Bookup/Zarkov---first impressions] by James H. Coombs, rgc, August 10, 1992 » Zarkov
 * [|Bookup Chess Database] by Craig Jennings, rgc, July 14, 1994
 * [|BOOKUP, Gary, Vishy and "Evans!"] by Mike Leahy, rgc, April 19, 1995
 * [|Free BOOKUP for Windows upgrade] by Mike Leahy, rgc, August 11, 1995
 * [|Re: Help: Good Chess Tutor Software? Tried BOOKUP?] by Mike Leahy, CCC, October 13, 1997
 * [|Bookup Backsolving?] by Jerry Creed, CCC, June 27, 1999
 * [|Bookup Forum. Join in!] by Jerry Creed, CCC, August 22, 1999

2000 ...

 * [|Re: Bookup] by Peter Kappler, CCC, February 23, 2000
 * [|Re: If you own Chess Assistant, what would Bookup do for you?] by Miguel A. Ballicora, CCC, January 20, 2002
 * [|Bookup's backsolving] by Komputer Korner, CCC, May 12, 2005
 * [|My opinion on Bookup and backsolving] by Steven Edwards, CCC, May 17, 2005
 * [|Bookup for Patzers] by Mark Boylan, CCC, February 27, 2006
 * [|Bookup vs other opening software] by Daneil Johnson, CCC, March 06, 2006
 * [|Chess Openings Wizard Professional - New Software] by Jaimes Conda, CCC, February 19, 2009 » Chess Opening Wizard

2010 ...

 * [|Status of bookup?] by John Smith, CCC, October 03, 2016

=External Links=
 * [|Bookup.com - Chess Opening Software]
 * [|Importing Bookup Information into Chess Assistant] by Robert Pawlak, ChessOK, November 13, 2006

=References= =What links here?= include page="Bookup" component="backlinks" limit="40"
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