Ah, TetraVex looks like it. Maybe it was a computer version of the game that I remember. The Microsoft logo doesn't look familiar, so it was probably a knock off.
Since physical pieces would have only one solution, it would HAVE to be software to generate many repeat plays.
So, what was your search method for finding that? After all, search technique is the most important skill these days.
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FireFox31
110gig MKIIa (30+80), Eutronix lights, 32 meg stacked RAM, Filener orange gel lens,
Greenlights Lit Buttons green set