.CTB file extension
This is the basic program to work with .CTB extension
The program works with the following extensions:
ck2,
cbs,
ck3,
cko,
cba,
ckn,
cbb,
cp1,
cbc,
cp2,
cbe,
cp3,
cbf,
cpn,
cpo,
cbh,
ctb,
cbm,
ctg,
cbp,
cto,
cbt,
pgi,
cbv,
pgn,
cib,
cbz,
cit,
ck1 and
cbgi
.CTB extension is also supported by the following programs:
ChessBase
ChessBase openings book
ChessBase 13 is a personal, stand-alone chess database.
Open chess games database files and play through the games.