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| author | Simon Tatham <anakin@pobox.com> | 2019-04-13 11:26:54 +0100 |
|---|---|---|
| committer | Simon Tatham <anakin@pobox.com> | 2019-04-13 11:26:54 +0100 |
| commit | 1114a2af332ecfa61a3ae0df478d26b9a3b863a4 (patch) | |
| tree | 93c0ed067956ff2b5288270b337c6e6244a84321 /PuzzleApplet.java | |
| parent | d96298ed0100873c59b3be698b01c369f888499b (diff) | |
| download | puzzles-1114a2af332ecfa61a3ae0df478d26b9a3b863a4.zip puzzles-1114a2af332ecfa61a3ae0df478d26b9a3b863a4.tar.gz puzzles-1114a2af332ecfa61a3ae0df478d26b9a3b863a4.tar.bz2 puzzles-1114a2af332ecfa61a3ae0df478d26b9a3b863a4.tar.xz | |
Dominosa: another forcing-chain based deduction.
We've already spotted when a domino occurs twice in the _same_ forcing
chain. But now we also spot when it occurs twice in the same _pair_ of
complementary forcing chains, one in each of the two options. Then it
must appear in one of those two places, and hence, can't appear
anywhere else.
Diffstat (limited to 'PuzzleApplet.java')
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