Was that the one where you have four pegs of different colours and you get ten goes to find out what the combination is?

( Cap'n Tallbeard, Fri 12 Jan 2007, 15:10, archived)

Yup.
With black and white pegs for "right colour right position & right colour, wrong position"
( The Teviot Moose major 5th., Fri 12 Jan 2007, 15:12, archived)

Yes.

( L-Space - scientia sapientes vocat., Fri 12 Jan 2007, 15:13, archived)