In cutechess-cli, tc=40/4 and tc=40/0:4 are displayed on output as [TimeControl "40/4"], and expressed in UCI as:
go wtime 4000 btime 4000 movestogo 40
So far, so good. But when ratings lists mention "40/4" they mean 4 minutes.
http://www.computerchess.org.uk/ccrl/404/about.html
The context-dependent factor of 60 seems, er, unfortunate. How did it arise? And what does a "40/4 match" mean on this list?
Robert P.
tc ambiguity
Moderator: Ras