Summary
Each tile is placed so that it is alone in its row, column and coloured square. Always there is at least one tile that can be placed with certainty - no trial and error is required.
Author(s)
Activity Library
Peter Hewitt
License
Work in progress.
friv
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by miguel grau on June 20, 2014
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friv friovby i.e 20505 on June 26, 2014