.CTG file extension

This is the basic program to work with .CTG extension

ChessBase Light 2007

ChessBase Light 2007 ChessBase openings book

The program works with the following extensions: ck1, ck2, cbs, ck3, cko, ckn, cba, cp1, cbb, cp2, cbc, cp3, cbe, cpn, cbf, cpo, ctb, cbh, ctg, cbm, cto, cbp, pgi, cbt, cbv, pgn, cib, cbz, cit and cbgi

.CTG extension is also supported by the following programs:


ChessBase ChessBase openings book

ChessBase 13 is a personal, stand-alone chess database.
ChessBase 9

ChessBase 9 ChessBase openings book


WhereIsIt WhereIsIt? Catalog Group File

Organize the contents you keep in different storage media.


GWhere allows you to manage a catalog of your CDs and any other removable media.
ChessBase Reader

ChessBase Reader ChessBase openings book

Open chess games database files and play through the games.