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Location: India | In the 9x9 Average Sudoku of the IB no cell is marked by horizontal or vertical lines |
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SM 2020 (Math) Author
Posts: 417
Location: India | 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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Location: 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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PR 2020 (Shading and Loops) Author
Posts: 668
Location: India | Here goes some Tips and Tricks to crack some of the types in this test and bunch of links for practice puzzles.
http://swaroopg92.blogspot.com/2015/03/sudoku-mahabharat-episode-7-...
Have fun :)
Good luck to all :)
Edited by swaroop2011 2015-03-13 8:45 PM
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Mean Minis (2020) Author
Posts: 774
Location: 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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Location: 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 )...
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Posts: 71
Location: India | 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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Location: 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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SM 2020 (Math) Author
Posts: 417
Location: India | 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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Location: India | ok...thank you |
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| 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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SM 2020 (Math) Author
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Location: India | Are the points distribution for converse out ? |
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PR 2020 (Shading and Loops) Author
Posts: 668
Location: 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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PR 2020 (Shading and Loops) Author
Posts: 668
Location: India | A practice puzzle Consecutive: http://swaroopg92.blogspot.com/2015/03/puzzle-no-129-consecutive-su... by me.
Also Rajesh, posted a average sudoku: http://www.funwithpuzzles.com/2015/03/average-sudoku-daily-sudoku-l...
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Location: India | Points distributionsAn updated version of Instruction Booklet with points table is now uploaded.
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Location: India | Can I please get Hints to get started with kropki sudoku? |
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Mean Minis (2020) Author
Posts: 774
Location: 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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PR 2020 (Shading and Loops) Author
Posts: 668
Location: 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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Location: India |
Link to score page : http://logicmastersindia.com/SM/201503/score.asp |
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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? | 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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Posts: 15
Location: 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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Posts: 20
Location: 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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Posts: 30
Location: 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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Sudoku Mahabharat - Converse - 21st-23rd Mar
