There was a puzzle game on ZX-Spectrum computer called "Logo: Part I": http://www.worldofspectrum.org/pub/sinclair/screens/in-game/l/Logo-PartI.gif

Basically, you can put tokens on the board; the newly put token becomes 1; old neighbours are increased; if a neighbour was 4, it becomes 1 again; the goal is to get the specific configuration for each level.

I'd want to know if there are other names or implementations of this puzzle. Is it well-known?


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This seems to be a variant of Lights Out, except switches that haven't been pressed don't 'exist' yet.


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