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Map: document explicitly that initial regions are immutable.

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Chris Boyle reports that a few users of the Android port were confused
by this, e.g. https://github.com/chrisboyle/sgtpuzzles/issues/624 .

(That seems surprising to me, since I view Map as extremely closely
related to Solo - both are special cases of the general game class
'here is a partial k-colouring of a graph, find the unique total
k-colouring that extends it', just with different ranges of k and
different valid graphs. And surely nobody approaches a Sudoku puzzle
and expects to be able to rub out provided clues they don't like! But
I suppose if you're thinking of Map as a completely separate puzzle
then perhaps that analogy doesn't have the same force.)
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Simon Tatham
2023-11-14 12:41:46 +00:00
parent 3264d56791
commit 3ae90bcd3a
1 changed files with 1 additions and 1 deletions
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@ -1923,7 +1923,7 @@ You are given a map consisting of a number of regions. Your task is
to colour each region with one of four colours, in such a way that to colour each region with one of four colours, in such a way that
no two regions sharing a boundary have the same colour. You are no two regions sharing a boundary have the same colour. You are
provided with some regions already coloured, sufficient to make the provided with some regions already coloured, sufficient to make the
remainder of the solution unique. remainder of the solution unique, and these cannot be changed.
Only regions which share a length of border are required to be Only regions which share a length of border are required to be
different colours. Two regions which meet at only one \e{point} different colours. Two regions which meet at only one \e{point}