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authorSimon Tatham <anakin@pobox.com>2019-04-03 18:16:25 +0100
committerSimon Tatham <anakin@pobox.com>2019-04-04 23:58:31 +0100
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Dominosa: add a Hard difficulty which can do set analysis.
This is another thing I've been doing with my own brain for ages as a more interesting alternative to scouring the grid for the simpler deduction that must be there somewhere - but now the solver can understand it too, so it can generate puzzles that _need_ it (or at least need something beyond the simpler strategies it understands).
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