Scid vs. PC is a http://www.aliyun.com/zixun/aggregation/17547.html "> powerful chess software. It has some well-known chess engines that can be used to play, fics, and even automate computer chess tournaments on the Internet. In addition, it has extensive database and PGN file processing capabilities.
Scid vs. PC 4.7 This version has updated some good new features for free Internet chess tools. Players can also watch their friends play while playing and can use ' smoves ' to load previous games for analysis. The SPELLING.SSP file has been updated to January 2012.
Software Information: http://scidvspc.sourceforge.net/
Download Address:
Source:http://sourceforge.net/projects/scidvspc/files/source/scid_vs_pc-4.7.tgz/download
Windows:http://sourceforge.net/projects/scidvspc/files/mac/scidvsmac-4.6.dmg/download
OS X Universal:http://sourceforge.net/projects/scidvspc/files/windows/scid%20vs%20pc-4.7.exe/download