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Hemant Kr Malani
Posts: 65
Country : India | In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines |
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kishy72
Posts: 419
Country : India | kishy72 posted @ 2015-03-13 7:54 PM Hemant Kr Malani - 2015-03-13 7:46 PM
In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines
The rules state that "All possible lines are marked " .So if there are no lines it means that there are no such occurences of numbers which are average of their horizontal or vertical neighbours. |
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debmohanty
 
Country : India | Kishore is right. This particular example was selected intentionally to show that such puzzles can be made without any "circles" / "bars" / "lines", and are often part of championships. |
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swaroop2011
Posts: 668
Country : India | |
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rakesh_rai
Posts: 774
Country : India | debmohanty - 2015-03-13 7:59 PM
Kishore is right. This particular example was selected intentionally to show that such puzzles can be made without any "circles" / "bars" / "lines", and are often part of championships. Since "The Sudoku booklet will look exactly like next 8 pages in this instruction booklet.", do we safely assume that there will be no horizontal or vertical "lines" in the PB too (for Average Sudoku )... |
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debmohanty
Country : India | rakesh_rai - 2015-03-14 6:55 PM
debmohanty - 2015-03-13 7:59 PM
Kishore is right. This particular example was selected intentionally to show that such puzzles can be made without any "circles" / "bars" / "lines", and are often part of championships. Since "The Sudoku booklet will look exactly like next 8 pages in this instruction booklet.", do we safely assume that there will be no horizontal or vertical "lines" in the PB too (for Average Sudoku )... If you safely assume that, you can also assume that the "bars" / "dots" / "circles" in the Sudoku booklet will be same as in the IB for ALL puzzles. May be the digit clues will also be same.
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shera90
Posts: 71
Country : India | shera90 posted @ 2015-03-15 10:43 AM kishy72 - 2015-03-13 7:54 PM
Hemant Kr Malani - 2015-03-13 7:46 PM
In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines
The rules state that "All possible lines are marked " .So if there are no lines it means that there are no such occurences of numbers which are average of their horizontal or vertical neighbours.
then it is classic sudoku ? isn't it ? |
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Administrator
Country : India | shera90 - 2015-03-15 10:43 AM
kishy72 - 2015-03-13 7:54 PM
Hemant Kr Malani - 2015-03-13 7:46 PM
In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines
The rules state that "All possible lines are marked " .So if there are no lines it means that there are no such occurences of numbers which are average of their horizontal or vertical neighbours.
then it is classic sudoku ? isn't it ?
Classic sudoku with additional constraint that no cell is the average of its two vertical or horizontal neighbours. This is the "converse" rule for average. |
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kishy72
Posts: 419
Country : India | kishy72 posted @ 2015-03-15 2:43 PM Administrator - 2015-03-15 11:12 AM
shera90 - 2015-03-15 10:43 AM
kishy72 - 2015-03-13 7:54 PM
Hemant Kr Malani - 2015-03-13 7:46 PM
In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines
The rules state that "All possible lines are marked " .So if there are no lines it means that there are no such occurences of numbers which are average of their horizontal or vertical neighbours.
then it is classic sudoku ? isn't it ?
Classic sudoku with additional constraint that no cell is the average of its two vertical or horizontal neighbours. This is the "converse" rule for average.
Adding to that ,in due course of time,you will understand that the converse rule too plays a pivotal rule in many sudokus.At times,you will reach a stage where there won't be any progress attained by using the normal classic rules of sudoku but using the converse rule and realizing that a certain number won't be in a particular cell will help you make progress. |
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Hemant Kr Malani
Posts: 65
Country : India | ok...thank you |
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saravanan
Posts: 1
| rakesh_rai - 2015-03-14 6:55 PM
debmohanty - 2015-03-13 7:59 PM
Kishore is right. This particular example was selected intentionally to show that such puzzles can be made without any "circles" / "bars" / "lines", and are often part of championships. Since "The Sudoku booklet will look exactly like next 8 pages in this instruction booklet.", do we safely assume that there will be no horizontal or vertical "lines" in the PB too (for Average Sudoku )... |
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akash.doulani
Posts: 157
Country : India | Are the points distribution for converse out ? |
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swaroop2011
Posts: 668
Country : India | akash.doulani - 2015-03-19 9:20 AM
Are the points distribution for converse out ?
It's not out yet.
But it will be out soon. |
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swaroop2011
Posts: 668
Country : India | |
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Administrator
Country : India | Points distributionsAn updated version of Instruction Booklet with points table is now uploaded.
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purvishah
Posts: 15
Country : India | Can I please get Hints to get started with kropki sudoku? |
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rakesh_rai
Posts: 774
Country : India | purvishah - 2015-03-21 12:01 AM
Can I please get Hints to get started with kropki sudoku?
Try to find a series of two or three black dots in succession within a row/column/box. They can be 124 or 248 (for 2 black dots ) and 1248 (for three black dots ). Normally you will get a contradiction with some of the possibilities and be able to proceed. Also, 5/7/9 cannot occupy a cell with a black dot. If there is no series of two or three dots, you may have to go ahead with pencilmarking of the cells containing black dots first, and proceed. In general, the starting hints are hidden in or around the cells with black dots. Also, if there is a long series of white dots in succession, they can also help start.
You can also look through the following discussions:
http://rohanrao.blogspot.in/2008/11/rules-of-kropki.html
http://www.sudokuxtra.com/forum/read.php?2,1138 |
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swaroop2011
Posts: 668
Country : India | With less than a hour left,
I would like to wish all participants BEST OF LUCK !
It's your last chance to come back and make it to finals.
I strongly recommend for all beginners to go through tricks and practice puzzles from the links shared in earlier posts.
Good Luck ! :)
Edited by swaroop2011 2015-03-21 4:54 AM
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Administrator
Country : India | |
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An LMI player
| An LMI player posted @ 2015-03-21 10:04 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? | 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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purvishah
Posts: 15
Country : India | rakesh_rai - 2015-03-21 12:57 AM
purvishah - 2015-03-21 12:01 AM
Can I please get Hints to get started with kropki sudoku?
Try to find a series of two or three black dots in succession within a row/column/box. They can be 124 or 248 (for 2 black dots ) and 1248 (for three black dots ). Normally you will get a contradiction with some of the possibilities and be able to proceed. Also, 5/7/9 cannot occupy a cell with a black dot. If there is no series of two or three dots, you may have to go ahead with pencilmarking of the cells containing black dots first, and proceed. In general, the starting hints are hidden in or around the cells with black dots. Also, if there is a long series of white dots in succession, they can also help start.
You can also look through the following discussions:
http://rohanrao.blogspot.in/2008/11/rules-of-kropki.html
http://www.sudokuxtra.com/forum/read.php?2,1138
Thanks a lot!! |
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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? | 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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margareta456
Posts: 30
Country : Poland | | 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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ghirsch
Posts: 102
Country : United States | ghirsch posted @ 2015-03-21 11:11 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? | Very nice | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
There were a lot of good variants in this test. I especially liked the average sudoku, which I had never seen before. Nice job with this, Swaroop. |
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zorko
Posts: 11
Country : Bulgaria | zorko posted @ 2015-03-22 2:03 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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@ 2015-03-13 7:46 PM (#17901 - in reply to #17883) (#17901) Top