On Tue, 21 Feb 2012 23:36:27 +0100
Simon Thum <simon.thum@xxxxxx> wrote:

> Hi Renato,
>
> one of my block agendas has
> (tags-todo "@work&TODO=\"TODO\"&SCHEDULED=\"\"&DEADLINE=\"\")
>
> i.e. lists todos which are tagged @work and aren't scheduled or
> deadlined.
>

thank you very much Simon, I added this to my .emacs:

(setq org-agenda-custom-commands
'(("T" tags-todo
"TODO=\"TODO\"+SCHEDULED=\"\"+DEADLINE=\"\"-play-computer|bug" )))

and now I have exactly what I wanted (and learned more than something
on custom agenda views and tag/properties matching).

cheers!
renato