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agnar
Joined: 03 Apr 2012
Posts: 3
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 Posted: Tue Apr 03, 2012 8:05 am Post subject: Sudoku2 fron fingerarts on iPad/Iphone |
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Is there anyone of out thar that have experienve with Sudoku2 from fingerarts on the iPad/iPhone.
I have used it for a while. While the user interface is quite nice, I find the expert-level some times too difficult. Some of them are easilly solved using a two-string kite, a fish, sky-scraper or an xy-wing. But others seems completely unsolvable. As a test, I have ran several of them through SudoCue, to help find a solution, but it it surrenders!
Are there anyone of you having experience solving them without guessing?
Agnar |
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Pat
Joined: 23 Feb 2010
Posts: 207
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| Posted: Thu Apr 05, 2012 1:38 pm Post subject: |
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| agnar wrote: |
Sudoku2 from fingerarts
on the iPad/iPhone I have ran several of them through SudoCue, to help find a solution, but it surrenders
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perhaps you can post an example |
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agnar
Joined: 03 Apr 2012
Posts: 3
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| Posted: Mon Apr 09, 2012 7:22 pm Post subject: |
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Here is an example:
| Code: |
. . 2|. . .|7 . .
. . 7|3 . .|. 1 4
. . .|. . 5|. . 8
-----+-----+-----
. . .|. . .|1 6 .
. . 1|. 7 .|3 . .
. . .|6 . .|. . 7
-----+-----+-----
1 . .|. . 4|8 . .
. 5 8|. . 6|2 . .
. 4 .|. 5 .|. . . |
And here is SudoCue's solver log:
- Digit 4 is a hidden single for R8C8 in multiple houses
- Digit 4 is a hidden single for R6C7 in multiple houses
- Digit 7 is a hidden single for R3C4 in multiple houses
- Digit 7 is a hidden single for R9C6 in multiple houses
- Digit 7 is a hidden single for R7C8 in multiple houses
- Digit 5 is a hidden single for R7C9 in multiple houses
- Digit 7 is a hidden single for R8C1 in multiple houses
- Last instance of digit 7 in R4C2
- Digit 8 is a hidden single for R9C4 in multiple houses
- Hidden single in box 3 for digit 2
- Hidden single in row 9 for digit 1
- Hidden single in box 9 for digit 6
- Digit 6 is a hidden single for R1C9 in multiple houses
- Hidden single in box 3 for digit 3
- Digit 3 is a hidden single for R8C9 in multiple houses
- Box 9 has one empty cell for the final digit 9
- Digit 5 is a hidden single for R2C7 in multiple houses
- Column 7 has one empty cell for the final digit 9
- Digit 5 is a hidden single for R1C1 in multiple houses
- Hidden single in box 8 for digit 3
- Hidden single in box 8 for digit 2
- Digit 2 is a hidden single for R9C1 in multiple houses
- Row 9 has one empty cell for the final digit 3
- Box 1 only has candidates for digit 4 in row 3
- Solver surrenders
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Pat
Joined: 23 Feb 2010
Posts: 207
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| Posted: Tue Apr 10, 2012 8:35 am Post subject: re: 7.3 |
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| agnar wrote: |
Here is an example:..2...7....73...14.....5..8......16...1.7.3.....6....71....48...58..62...4..5....
[ play ] |
thanksway too tough for me,
SuDoku Explainer rates it 7.3 |
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agnar
Joined: 03 Apr 2012
Posts: 3
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| Posted: Tue Apr 10, 2012 7:53 pm Post subject: |
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| The question is, is it really solvable. And if so, what's the trick? |
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Pat
Joined: 23 Feb 2010
Posts: 207
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| Posted: Wed Apr 11, 2012 9:19 am Post subject: |
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| agnar wrote: | | The question is, is it really solvable. And if so, what's the trick? |
the experts will say yes it is solvable
they'll use "forcing chains" or "forcing nets"
( Nicolas Juillerat's SuDoku Explainer can show you a solution-path ) |
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