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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1790
   
Location: India | tamz29 - 2015-09-12 2:21 PM
Lovely set of sudokus!
I really liked the new gimmick on Quadruple Sudoku.
Am I the only one who found the second Repeated Neighbours very tough?
I thought that puzzle was rather unfairly more difficult than the second-hardest one in the lot.
There's people with 17/18 but have very good times.
It does seem to have been very tough going by the timings. I had both Deb and Rishi solve that one and had no issues (Rishi actually took longer on Touchy and still had a total testing time which was around 2 min more than his time for R1), but I guess it is a big strength for both of them. You need to get three pairs of repeating digits in each quadrant. I think it is possible to get those just by looking at the grid, but Jan Zverina says he missed the middle one and Tiit also says he missed the middle one for a while. So it might just be that. Was your experience of difficulty somewhere else? |
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Posts: 225
Location: Thailand | I just took long to get the insight that there has to be three pairs in each 'region'.
Even knowing that, I ended up bifurcating to get my answer.
Nonetheless, it was a beautiful puzzle, requiring leaps of insight, one I would be happy with if I had wrote it :) |
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Posts: 42
Location: ITALY | | 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 | | | 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 | |
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Posts: 26
Location: Finland | | 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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| | 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? | Many puzzles were worth too much or too little | |
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Posts: 42
Location: United States | Feedback tool hangs for me (flash).
Good variations for the theme.
I personally liked the easy/hard distributiion -- probably too many hard ones for beginners though.
Excellent puzzle quality! Some real delights.
Point values seems pretty fair. |
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Posts: 114
Location: India | Prasanna's class stamped all over, including IB |
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Posts: 114
Location: 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? | Too many hard 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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WCPN Author
Posts: 191
Location: The Netherlands | | 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 hard 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 | |
In my opinion, the neighbours theme sees on direct relationships between two orthogonal connected cells. Renban and Quadruple are a little bit off this theme. But: I enjoyed the test very much. Really nice aesthetics and solving routes. Maybe a bit on the hard side for beginners, exactly the right difficulty level for me! Thanks a lot! |
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Posts: 22
Location: 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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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1790
Location: India | devarajand - 2015-09-13 10:43 AM
Prasanna's class stamped all over, including IB
Thanks, but the IB is mostly by Deb :) The Repeated Neighbours 9x9 and the Thermo 9x9 at least are from previous contests I remember. Much easier to re-use than re-write for IBs.
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Fugitive Warrant Author
Posts: 25
Location: South Korea | | 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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| | 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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Posts: 102
Location: United States | | 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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Posts: 44
Location: Thailand | | 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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Mean Minis (2020) Author
Posts: 774
Location: 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? | 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 | |
Nice puzzles. My top three: Quadruple, Touchy and Repeated Neighbours.
As noted by Richard, technically, Renban and Quadruple do not necesarily belong to 'Neighbours' theme. Also, there is a variant by the name 'Neighbours' which could have been included to represent the theme better.
The rule change in Quadruple came in fairly late and it made the variant tougher too.
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Location: India | rakesh_rai - 2015-09-14 12:07 AM
As noted by Richard, technically, Renban and Quadruple do not necesarily belong to 'Neighbours' theme. Please elaborate.
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Mean Minis (2020) Author
Posts: 774
Location: India | debmohanty - 2015-09-14 6:05 AM
rakesh_rai - 2015-09-14 12:07 AM
As noted by Richard, technically, Renban and Quadruple do not necesarily belong to 'Neighbours' theme. Please elaborate.
The statement assumes Neighbours being interpreted as "direct relationships between two orthogonal connected cells" |
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Posts: 24
Location: 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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Posts: 24
Location: India | Can someone help explain me how to solve the Repeated neighbours 9X9 puzzle. I understood the rule and I was able to identify the orthogonally connected cells which will have same values but still couldnt solve it..
Found this one to be too tough.... |
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Location: India | rakesh_rai - 2015-09-14 8:00 AM
debmohanty - 2015-09-14 6:05 AM
rakesh_rai - 2015-09-14 12:07 AM
As noted by Richard, technically, Renban and Quadruple do not necesarily belong to 'Neighbours' theme. Please elaborate.
The statement assumes Neighbours being interpreted as "direct relationships between two orthogonal connected cells"
In any case, in my opinion, Neighbours could either be orthogonal or diagonal. |
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| | 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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Posts: 43
Location: United States | | 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 | |
Repeated neighbors give me a hard time for some reason. Enjoyed the test as always! |
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Location: India | prasanna16391 - 2015-09-13 12:17 PM
devarajand - 2015-09-13 10:43 AM
Prasanna's class stamped all over, including IB
Thanks, but the IB is mostly by Deb : ) The Repeated Neighbours 9x9 and the Thermo 9x9 at least are from previous contests I remember. Much easier to re-use than re-write for IBs.
Most of the examples are from previous LMI contests.
Source of Sudokus in this IB :
I created following examples
6X6 Classics : originally for IB of SM first round last year
8X8 Classic : originally for IB of SM first round of SM last year
9X9 Classic 1,2,3 : originally for LMI Beginners' Sudoku Test - August 2012
Thermo 6X6 : originally for LMI Screen Test #3
Thermo 9X9 : originally for Sudoku Grand Prix Indian Round 2013
Touchy 6X6 : originally for LMI Screen Test #3
Touchy 9X9 : originally for IB of mock12
Repeated Neighbours 9X9 : I created for Sudoku Grand Prix Indian Round 2013
New Example of Quadruple 6X6 : originally for LMI Screen Test #3
Renban 9X9: originally for example of Beginners Sudoku Contest
Repeated Neighbours 6X6 : Prasanna created
Examples for Quadruple 6X6, 9X9 are taken from Times Sudoku Championship IB. I don't recollect who created them.
Renban 6X6 : I can't recollect where I took this from
The new example for Quadruple 6X6 was created by me for LMI Screen Test #3
Edited by debmohanty 2015-09-14 11:13 AM
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1790
Location: India | Regarding the variant choices, last year's contest had Renban and Quad Max, and there weren't any specified notes that these didn't fit the theme, so I am a bit surprised to see it now that they are repeated (well, I'm equating Quad Max to Quadruple in terms of relation to neighbours). Either way, I think it is mainly an issue of definition here. I wouldn't limit Neighbours to a 1-1 connection, but anything to do with neighbourhood of cells. This can mean multiple cells defined by a common factor, or cells which are next to each other interacting. Just as a real-world example, if a person stays in an apartment on the same floor as 5 other apartments, all 5 would be called neighbours and together they can be called a neighbourhood. Of course, definitions can differ from individual to individual, this is just the way that we looked at it last year when we were coming up with the categories. |
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Neighbours - 12th-14th Sep - Sudoku Mahabharat & ISC Qualifier
