The New Sudoku Players' Forum

by **eleven** » Fri Apr 19, 2013 8:02 am

dobrichev wrote:Here is one 42 clue with 1716 bd3.
Code: Select all
1234567.9.5.18923..89237.51246..8...37.6...4...5.4..6.53.9.1..8..2.......6..24.7.

Nice example, Mladen.

I meant these "disjoint" subpatterns in the candidate grids.
Also here we have BUG-patterns with 1 or 2 extra candidates, which cannot be solved with basics. The less cells they need, the more room is for other ones.

Hidden Text: Show

Code: Select all: *---------------------------------------------* | 1 2 3 | 4 5 6 | 7 8 9 | | 467 5 47 | 1 8 9 | 2 3 46 | | 46 8 9 | 2 3 7 | 46 5 1 | |--------------+--------------+---------------| | 2 4 6 | 357 19 8 | 35 19 357 | | 3 7 18 | 6 19 25 | 189 4 25 | | 89 19 5 | 37 4 23 | 18 6 237 | |--------------+--------------+---------------| | 5 3 47 | 9 67 1 | 46 2 8 | | 47 19 2 | 8 67 35 | 35 19 46 | | 89 6 18 | 35 2 4 | 19 7 35 | *---------------------------------------------* 467 *--------------------------------------* | 1 2 3 | 4 5 6 | 7 8 9 | | 467 5 47 | 1 8 9 | 2 3 46 | | 46 8 9 | 2 3 7 | 46 5 1 | |-------------+-----------+------------| | 2 4 6 | 7 1 8 | 3 9 5 | | 3 7 8 | 6 9 5 | 1 4 2 | | 9 1 5 | 3 4 2 | 8 6 7 | |-------------+-----------+------------| | 5 3 47 | 9 67 1 | 46 2 8 | | 47 9 2 | 8 67 3 | 5 1 46 | | 8 6 1 | 5 2 4 | 9 7 3 | *--------------------------------------* 189 *---------------------------------------* | 1 2 3 | 4 5 6 | 7 8 9 | | 4 5 7 | 1 8 9 | 2 3 6 | | 6 8 9 | 2 3 7 | 4 5 1 | |-------------+-----------+-------------| | 2 4 6 | 7 19 8 | 3 19 5 | | 3 7 18 | 6 19 5 | 189 4 2 | | 89 19 5 | 3 4 2 | 189 6 7 | |-------------+-----------+-------------| | 5 3 4 | 9 7 1 | 6 2 8 | | 7 19 2 | 8 6 3 | 5 19 4 | | 89 6 18 | 5 2 4 | 19 7 3 | *---------------------------------------* 2357 *-------------------------------------* | 1 2 3 | 4 5 6 | 7 8 9 | | 4 5 7 | 1 8 9 | 2 3 6 | | 6 8 9 | 2 3 7 | 4 5 1 | |----------+------------+-------------| | 2 4 6 | 57 1 8 | 35 9 357 | | 3 7 8 | 6 9 25 | 1 4 25 | | 9 1 5 | 37 4 23 | 8 6 27 | |----------+------------+-------------| | 5 3 4 | 9 7 1 | 6 2 8 | | 7 9 2 | 8 6 35 | 35 1 4 | | 8 6 1 | 35 2 4 | 9 7 35 | *-------------------------------------* (the 7 is in an x-wing, so it's solution does not help for pattern 1)

Website · by **denis_berthier** » Fri Apr 19, 2013 8:47 am

eleven wrote:
dobrichev wrote:Here is one 42 clue with 1716 bd3.
Code: Select all
1234567.9.5.18923..89237.51246..8...37.6...4...5.4..6.53.9.1..8..2.......6..24.7.

Nice example, Mladen.
I meant these "disjoint" subpatterns in the candidate grids.
Also here we have BUG-patterns with 1 or 2 extra candidates, which cannot be solved with basics. The less cells they need, the more room is for other ones.
...
(the 7 is in an x-wing, so it's solution does not help for pattern 1)

Just to clarify your example, does the following solution mean that you consider bivalue-chains[2] (in the present case basic AICs[2]) are not in the "basics" ?

Hidden Text: Show

by **eleven** » Fri Apr 19, 2013 9:57 am

Yes, "basics" only include singles, locked candidates and subsets (tuples). This is typically all, what is needed for "hard" newspaper puzzles.

Website · by **denis_berthier** » Fri Apr 19, 2013 10:21 am

eleven wrote:Yes, "basics" only include singles, locked candidates and subsets (tuples). This is typically all, what is needed for "hard" newspaper puzzles.

OK, thanks for the precision

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