Synaptic installs not installed

[Avraham Hanadari]

On at least two occasions I have selected and installed packages which I 
was later unable to find. "Remind" and "3-D Chess" are the most recent. 
Evidently there is a step here which I am ignoring. It is clearly marked 
in Synaptic that the programs are installed. I reinstalled Remind just 
to be sure. I've even searched in Add Applications, and they do not 
appear there. What have I missed?

Thanks in advance,

Avraham