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Administrator
   
Country : India | Boxes will correspond. |
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Fred76
Posts: 337
Country : Switzerland | Fred76 posted @ 2016-01-03 2:59 AM The rule of "Twin Givens sudoku" is strangely formulated:
"Two cells will
remain empty as
these are twins and
of the same value."
What is the value of an empty cell ??
Fred |
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vopani
Posts: 739
Country : India | vopani posted @ 2016-01-03 9:53 AM Fred76 - 2016-01-03 2:59 AM
The rule of "Twin Givens sudoku" is strangely formulated:
"Two cells will
remain empty as
these are twins and
of the same value."
What is the value of an empty cell ??
Fred
Yes, its quite an amusing way of stating it.
Lets just assume the value is 0 :- )
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Fred76
Posts: 337
Country : Switzerland | Fred76 posted @ 2016-01-03 4:46 PM Rohan Rao - 2016-01-03 9:53 AM
Fred76 - 2016-01-03 2:59 AM
The rule of "Twin Givens sudoku" is strangely formulated:
"Two cells will
remain empty as
these are twins and
of the same value."
What is the value of an empty cell ??
Fred
Yes, its quite an amusing way of stating it.
Lets just assume the value is 0 :- )
Or, if this value isn't 0, perhaps it represents the quantum vacuum (X is a quantum vacuum fluctuation when you enter codes )... |
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shera90
Posts: 71
Country : India | shera90 posted @ 2016-01-04 7:48 PM Can I get any twin givens 6*6 sudoku with step by step solution ? This variant seems to be very confusing to me. |
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Administrator
Country : India | shera90 - 2016-01-04 7:48 PM
Can I get any twin givens 6*6 sudoku with step by step solution ? This variant seems to be very confusing to me.
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prasanna16391
Posts: 1801
Country : India | As shown in the above image, it helps to have notations for cells which cannot be shaded. On paper I usually circle the cells which cannot be shaded/crossed out. Then its just about seeing how two shaded cells can be placed in some rows/columns/boxes with many circles considering that the two shaded cells can't be next to each other, and solving the rest as a classic from 1-4. |
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pranavmanu
Posts: 55
Country : India | Will it always be 1-4 for a 6*6 and 1-7 for a 9*9 sudoku that will be unshaded?? |
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prasanna16391
Posts: 1801
Country : India | Some Important Notes
- In Linked Classics, please note that the two grids are considered as one Sudoku for the sake of submission. If you submit only one grid, this will be marked wrong and result in an unnecessary penalty, so submit only if both grids are solved.
- In Twin Givens Sudoku, if you are solving on the online interface, you do not need to place Xs. We need this indication for the paper submissions, but since it is not a part of the solving logic, we've decided not to make it a necessity while solving online.
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prasanna16391
Posts: 1801
Country : India | pranavmanu - 2016-01-08 8:55 PM
Will it always be 1-4 for a 6*6 and 1-7 for a 9*9 sudoku that will be unshaded??
For this contest, yes. |
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ghirsch
Posts: 102
Country : United States | ghirsch posted @ 2016-01-08 10:45 PM Is there a mechanism for marking X's in the Twin Givens Sudokus on the online applet? If not, would the applet accept my answer if I were to use a number that would not otherwise appear in the grid to mark X's, e.g. a 9? Or do the X squares have to be fully empty?
Edited by ghirsch 2016-01-08 10:45 PM
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Administrator
Country : India | ghirsch - 2016-01-08 10:45 PM
Is there a mechanism for marking X's in the Twin Givens Sudokus on the online applet? If not, would the applet accept my answer if I were to use a number that would not otherwise appear in the grid to mark X's, e.g. a 9? Or do the X squares have to be fully empty?
You can type "X", just like you would type any other digit.
The blank squares can either be blank or have X.
We will enable solving of the example online in next half an hour. |
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Administrator
Country : India | Administrator - 2016-01-08 11:04 PM
We will enable solving of the example online in next half an hour. Now available. |
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rakesh_rai
Posts: 774
Country : India | | How well did the variants represent the theme of the test ? | representation could have been better | | | What was your opinion of the distribution of easy/hard puzzles? | Too many easy puzzles | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Not sure if Disjoint sudoku represents the theme of the test. Maybe Isosudoku could have been a possible type. The answer keys for a fair number of puzzles came quite early in the solving process. However, it is always difficult to set answer key, especially for 6x6 ones. Overlap 9x9 and Linked 9x9 were nice. The test was enjoyable overall. Thanks to the authors for this test. |
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An LMI player
| An LMI player posted @ 2016-01-09 6:26 AM | How well did the variants represent the theme of the test ? | representation could have been better | | | What was your opinion of the distribution of easy/hard puzzles? | Just right | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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An LMI player
| An LMI player posted @ 2016-01-09 6:32 AM | How well did the variants represent the theme of the test ? | representation could have been better | | | What was your opinion of the distribution of easy/hard puzzles? | Too many easy puzzles | | | What did you think about the puzzle quality of the test? | Average | |
Representation - Surprised not to see SudoKurve, IsoSudoku as types. Apart from being too easy, many Sudokus didn't use the "extra" rule of the variant significantly. |
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An LMI player
| An LMI player posted @ 2016-01-09 8:05 AM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Just right | | | What did you think about the puzzle quality of the test? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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vopani
Posts: 739
Country : India | vopani posted @ 2016-01-09 3:00 PM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Just right | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Really liked the Linked and Disjoint 9x9. Overall a good set but on the easier side.
Thanks Rajesh!
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prasanna16391
Posts: 1801
Country : India | About variant choice, we had two considerations to make.
One is, that there is an Irregular variations round too.
Another is, that some variants are not supported by the online interface. This is a bigger consideration than the first one, and we'd love to hear opinions on this from solvers who regularly use the interface. How would you feel about 1 or 2 variants not being on the interface? If we can be more flexible in this way we'd have a wider range to choose from. |
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An LMI player
| An LMI player posted @ 2016-01-09 4:33 PM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Too many medium difficult puzzles | | | What did you think about the puzzle quality of the test? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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kousek-nebe
Posts: 20
Country : Czech Republic | | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Too many easy puzzles | | | What did you think about the puzzle quality of the test? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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An LMI player
| An LMI player posted @ 2016-01-09 4:48 PM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What did you think about the puzzle quality of the test? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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aditi2302
Posts: 18
Country : India | | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Just right | | | What did you think about the puzzle quality of the test? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
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kishy72
Posts: 419
Country : India | kishy72 posted @ 2016-01-09 8:51 PM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Just right | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
A nice breezy set.Feels good to revisit classic based sudokus occasionally.More importantly,to complete a test. Thanks Rajesh for choosing this theme! I never had any difficulty solving any of the sudokus.All Classics were falling very quickly before using any of the advanced techniques like triplets ,hidden single etc., Linked (16 ) and Overlapping (16 )offered some resistance in way of my completion and were definitely the best of the lot by a far margin and my favouries .Neatly constructed. To conclude, a very pleasant set.Thanks for authoring Rajesh!Would have been even more better with a bit more difficult Classics. |
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MrLiang
Posts: 44
Country : Thailand | MrLiang posted @ 2016-01-09 11:02 PM | How well did the variants represent the theme of the test ? | variations represented the theme well | | | What was your opinion of the distribution of easy/hard puzzles? | Too many medium difficult puzzles | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Many puzzles were worth too much or too little | |
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@ 2016-01-02 5:11 PM (#20481 - in reply to #20459) (#20481) Top