Sudoku Mahabharat - Converse - 21st-23rd Mar | |
LMI Tests -> Sudoku Mahabharat | 60 posts • Page 1 of 3 • 1 2 3 |
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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. | ||||||||||||
kishy72 |
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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. | ||||||||||||
Hemant Kr Malani |
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Posts: 61 Location: India | ok...thank you | ||||||||||||
saravanan |
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Posts: 1 | rakesh_rai - 2015-03-14 6:55 PM debmohanty - 2015-03-13 7:59 PM 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)...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. | ||||||||||||
akash.doulani |
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SM 2020 (Math) Author Posts: 157 Location: India | Are the points distribution for converse out ? | ||||||||||||
swaroop2011 |
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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. | ||||||||||||
swaroop2011 |
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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. | ||||||||||||
purvishah |
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Posts: 15 Location: India | Can I please get Hints to get started with kropki sudoku? | ||||||||||||
rakesh_rai |
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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 | ||||||||||||
swaroop2011 |
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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 | ||||||||||||
An LMI player |
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purvishah |
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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!! | ||||||||||||
kousek-nebe |
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Posts: 20 Location: Czech Republic |
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margareta456 |
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Posts: 30 Location: Poland |
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ghirsch |
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Posts: 102 Location: United States |
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. | ||||||||||||
zorko |
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Posts: 11 Location: Bulgaria |
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sarwar0209 |
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Posts: 2 Location: India | I am not able to solve online the puzzles. a message of submission not allowed is displayed. | ||||||||||||
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Location: India | sarwar0209 - 2015-03-22 6:53 AM I am not able to solve online the puzzles. a message of submission not allowed is displayed. You might have cleaned your cache after starting the test. Option 1) Open a new tab and submit there. (Don't close the old tab - you can copy the solution from the old tab) Option 2) Submit using the text boxes (type the 2 rows in the text boxes), if that works. | ||||||||||||
TiiT |
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Posts: 139 Location: Estonia |
This test, I think, is a good way for beginners to join and start solving sudoku. Everything came out well and easily. Well done! | ||||||||||||
An LMI player |
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ingmanc |
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Posts: 42 Location: ITALY |
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rajeshk |
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WSPC Organizer Posts: 542 Location: India | Nice puzzles Swaroop. I liked the mini Average Sudoku the most and this the Sudoku which took maximum time for me to solve. At the beginning, I was not getting any opening in this Sudoku and then once I found out the 6 cannot be on line then it went through and ending of this puzzle was interesting. It again took me time to use converse rule and put 1 and 3 at end. Great puzzles and great job Swaroop, looking forward for more such tests from your side. | ||||||||||||
greenhorn |
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2021 World Sudoku+Puzzle Convention Organizer Posts: 164 Location: Slovakia |
Great puzzles... Thanks a lot, Swaroop! | ||||||||||||
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