Chess Software

What software is recommended?

The local Chess Club coach suggests Fritz or Rybka as "chess analysis engines". Of course there's no Mac version!

http://en.wikipedia.org/wiki/Chess_engine

http://en.wikipedia.org/wiki/Fritz_(chess)

http://en.wikipedia.org/wiki/Rybka

Rybka has been accused of being based on Fruit, but Rajlich has denied this categorically.[39] Further allegations of violating the GPL have been brought forward by chess programmer Zach Wegner based on a new decompilation effort and a one year study of the Rybka 1.0 executable.[40] Vas has since declined to respond to these allegations. http://en.wikipedia.org/wiki/Rybka#Fruit_GPL_chess_engine_controversy

IPPOLIT, Robbo Lito, Igorrit, Ivan Hoe, Fire Bird and Fire are a series of strong open source chess programs, originally developed by a team of anonymous programmers who call themselves the Decembrists, after the Decembrist revolt. http://en.wikipedia.org/wiki/Rybka#IPPOLIT_controversy

Although Fabien Letouzey's development of Fruit stopped in 2007 with version 2.3.1, the earlier open source 2.1 version provided the basis for many other programs. http://en.wikipedia.org/wiki/Fruit_(chess)

http://alpha.uhasselt.be/Research/Algebra/Toga/posix_versions/ - Posix versions of Fruit/Toga source code, may work on MacOs X.....

already-compiled for Mac? http://www.superchessengine.com/toga_ii.htm

free Mac fruit? http://www.fruitchess.com/purchase.htm - ah, Fruit is a GUI-less engine

• use Fruit within Sigma (for MacOs X) http://www.fruitchess.com/setup-sigma.htm

  • Sigma is also free! http://www.sigmachess.com/ - this is what I'm trying out, with Fruit as engine

Read reviews of various packages at http://chess4less.com/

Cheap supplier: http://checkmatechesssupply.com/