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Administrator
   
Country : India | |
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Administrator
Country : India | Instruction Booklet
The IB is available now at the contest page: http://logicmastersindia.com/2019/09S2/
The test starts on 20th September at 1200 hours IST and ends at 2359 hours IST on 24th September.
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Timjamiller
Posts: 54
Country : United States | For Kid Sudoku, is it allowed for consecutive digits in external sums to overlap? That is to say, could "3412..." be represented by 78573... or something similar? Also, are all cells in rows/columns with given sums included in at least one sum? So that 341 could NOT be represented by 31...?
For Renban Sudoku, does the "distinct consecutive" refer to within each shaded group (so no repeating in a shaded area) or to each group in the puzzle (so no two shaded regions can contain the same combination of digits) or both?
These are ambiguous to me from the instructions and the solutions, and I can see them having an impact on the solving. Thank you!
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rakesh_rai
Posts: 774
Country : India | Timjamiller - 2019-09-15 2:07 AM
For Renban Sudoku, does the "distinct consecutive" refer to within each shaded group (so no repeating in a shaded area) or to each group in the puzzle (so no two shaded regions can contain the same combination of digits) or both?
1. Within each shaded area no numbers can repeat. But the numbers must form a set of consecutive numbers.
2. It is possible for two (or more ) shaded regions to have the same combination of digits. |
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rakesh_rai
Posts: 774
Country : India | Timjamiller - 2019-09-15 2:07 AM
For Kid Sudoku, is it allowed for consecutive digits in external sums to overlap? That is to say, could "3412..." be represented by 78573... or something similar? Also, are all cells in rows/columns with given sums included in at least one sum? So that 341 could NOT be represented by 31...?
1. No overlap is allowed. So 341256789 will be represented as 876789. We keep on adding numbers till the sum is less than or equal to 9. There is only one way to represent any row/column.
2. All cells are included if a clue is given. The sum of the numbers in an external clue willl always be 45.
Some examples:
829356471 will be represented as 82986471
356271894 will be represented as 888894
192837465 will be represented as 192837465
And so on |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-15 7:36 PM How to play windoku sudoku and equal sum line sudoku..I m not able to play |
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rakesh_rai
Posts: 774
Country : India | Ronaldo - 2019-09-15 7:36 PM
How to play windoku sudoku and equal sum line sudoku..I m not able to play
I am unable to understand the question. Do you need clarity on the rules? Or the example? |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-16 9:37 AM No examples like how to play I can’t solve windoku given in the example |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-16 11:52 AM I am even not able to fill even a single digit except last row 1 in the whole windoku...any trick..any hint will do |
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rakesh_rai
Posts: 774
Country : India | Ronaldo - 2019-09-16 11:52 AM
I am even not able to fill even a single digit except last row 1 in the whole windoku...any trick..any hint will do
I think you meant 1 in last column in row 6.
Also, you can refer to the attached image (from sudokuwiki.org ) for hints. All cells of the same colour must contain digits 1-9 exactly once.
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DanAvi
Posts: 23
Country : India | DanAvi posted @ 2019-09-17 9:12 PM Hi Ronaldo,
Let me try to help you.
You rightly found that 1's spot to be R6C9.
The next number I placed was 7 in R8C7, by this sequence of eliminations:
Because of 7 in R3C1 & R5C9, 7 can be only in one of R6C2 or R6C3. So 7 can be only in one of R9C2 or R9C3.(R6C2 and R6C3 are part of the same window so other cells in that window can not have 7). Because 7 is either in R9C2 or R9C3 and there is a 7 in R5C9, so we can place a 7 in R8C7 for that box.
The next number I placed was 7 in R7C5, now find the logic behind it and you are on your way to solving this.
It took me much longer than usual to solve this sudoku, so I think the level of difficulty is rather very high. So do not sweat it, if you can not solve this. Try the web for some easy Windoku puzzle and you will be able to solve I suppose. Again this is only the Instruction sample and it indicates that in the test this puzzle carries only 2 points, so I expect this puzzle to be very easy in the test.
Best of luck |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-18 9:25 AM Hey can u help me with equal sum line sudoku also¿I am also not able to fill that also |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-18 1:51 PM Hey Daniel I m again stuck with windoku.after filling R2C3 R3C4 R3C5 R7C5.R8C7 and R6C9.can u help me further
Edited by Ronaldo 2019-09-18 2:08 PM
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rakesh_rai
Posts: 774
Country : India | Ronaldo - 2019-09-18 9:25 AM
Hey can u help me with equal sum line sudoku also¿I am also not able to fill that also Try to find out what the "equal sum" could be. What could be the minimum possible value on the slanting line. Also try to look at other lines and eliminate possibilities. Also, you can fill some cells by classic rules. |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-18 5:04 PM Can u quote some example..I m again able to fill only R3 C7, R9 C7, R4C9 |
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Anu G
Posts: 17
Country : India | Anu G posted @ 2019-09-18 11:25 PM Hi I can try helping you. Look at the long slanting line and calculate the minimum sum. There is a 5 in box 3. The minimum in box 5 will be 1,2,3 which is 6. The minimum in box 7 will be 1,4,5 which equals 10. so the minimum possible sum in a line is 5+6+10 =21. Now look at box 1. 2 can come only in R1C2.or R1C3. If 2 is in R1C3, you will need a minimum of 19 in the 2 cells below (R2C3 and R3C3) which is not possible. So 2 can fit only in R1C2. You can try the rest after this.
Edited by Anu G 2019-09-18 11:39 PM
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-19 12:04 PM Plz anybody can help me further |
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Ronaldo
Posts: 13
Country : India | Ronaldo posted @ 2019-09-20 9:19 AM Have. Any one filled windoku completely...if yes, can someone give me hint¿
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Administrator
Country : India | Puzzle Booklet (PB)
The password protected PB is now available for download at the contest page: http://logicmastersindia.com/2019/09S2/
The test starts on 20th September at 1200 hours IST and ends at 2359 hours IST on 24th September.
Ignore the question on "3 favourite puzzles" in the feedback section.
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rakesh_rai
Posts: 774
Country : India | Ronaldo - 2019-09-20 9:19 AM
Have. Any one filled windoku completely...if yes, can someone give me hint¿
Solutions are at the end of the Instruction Booklet. You may refer to the solutions also for clarity. |
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Administrator
Country : India | The test has started. |
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Sedho
Posts: 18
Country : Philippines | Sedho posted @ 2019-09-21 9:22 AM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Feedback page asks for 3 favorite puzzles, but the choices are about whether the puzzles were worth the right amount, so I'll answer here instead: 3 favorite puzzles: Little Killer, X-Sums, Odd-Even Bridge |
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aashay
Posts: 46
Country : India | aashay posted @ 2019-09-21 12:10 PM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Thanks Rakesh for a refreshing set of Sudokus. Really enjoyed solving them. I was a bit patchy and messed up Killer multiple times, but the overall quality of Sudokus was quite good. |
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kishy72
Posts: 419
Country : India | kishy72 posted @ 2019-09-21 8:18 PM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | |
Great set of sudokus Rakesh ! I thoroughly enjoyed the contest and it was hard to choose a favourite amongst these.However, if I were to pick a few, LK, X-Sums and Equal sum Lines would top the list in that order. The sudokus were very nicely constructed and were clean as a whistle.I was mostly concerned about Kid sudoku as I haven't seen this type much before in the past.Fortunately, I got through that rather fast after getting the idea.I had major hiccups in Rhombus and Diagonal towards the end but thankfully I didn't break those. Thanks a lot for the contest ! |
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An LMI player
| An LMI player posted @ 2019-09-21 11:41 PM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | | | 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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DanAvi
Posts: 23
Country : India | DanAvi posted @ 2019-09-22 10:14 AM Hi Ronaldo,
Please try a easier windoku first and then come to this difficult. Try to understand the logic from the solution from the solutions as a last resort, as advised by the admin. |
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DanAvi
Posts: 23
Country : India | DanAvi posted @ 2019-09-22 10:27 AM Hi again,
This is the first Equal Sum Lines Sudoku I have solved since starting to solve variants some 10 months ago. So I am not a expert and the experts have already given you hints. Still I will add one more. Please read this with the earlier posts with others.
The minimum sum must be 21 has been established. In box 9, since 1 can't be in R6C6 (minimum can't be reached, same logic to have put 2 in R1C2), we place 1 in R7C6, This means that 4 has to be in R6C6 or R6C7. So the maximum possible sum of the line in R6C6-9 can be 21 only (4+8+9). So we conclude that the Equal Sum is 21. With this deduction you must be able to solve, I suppose.
I am reluctant to post this because I am new to this and so I might have missed something. In some other variants after solving it in the Instructions I have found out that further insights are needed to solve the variant.
Keep trying and solve more of the same variants to understand it fully. You are bound to improve over time. |
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An LMI player
| An LMI player posted @ 2019-09-22 1:22 PM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | | | 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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harmeet
Posts: 87
Country : India | harmeet posted @ 2019-09-23 10:40 PM | 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 | | | Which set of puzzles did you like the most? | Rhombus Sudoku | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Beautiful set of puzzles. Loved x-sum, kid, and unique sums. Broke renban and got overwhelmed with rhombus during the test. |
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Gyuszi13
Posts: 17
Country : Hungary | | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | |
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Administrator
Country : India | Contest Extension
The Contest is extended by 24 hours and will now end at 2359 hours IST on 25th September.
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priyambhushan
Posts: 36
Country : India | | 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 | | | Which set of puzzles did you like the most? | Equal Sum Lines Sudoku | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | |
Great set of sudokus, enjoyed this contest greatly! especially loved the equal sum lines, kid sudoku and odd even bridge, all of which I tried for the first time.
Thanks Rakesh! Edited by priyambhushan 2019-09-24 9:41 PM
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rakesh_rai
Posts: 774
Country : India | Sedho - 2019-09-21 9:22 AM
Feedback page asks for 3 favorite puzzles, but the choices are about whether the puzzles were worth the right amount, so I'll answer here instead:
3 favorite puzzles: Little Killer, X-Sums, Odd-Even Bridge
That question on the feedback page can be ignored as mentioned earlier in the thread. Thanks Sedho! |
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rakesh_rai
Posts: 774
Country : India | aashay - 2019-09-21 12:10 PM
Thanks Rakesh for a refreshing set of Sudokus. Really enjoyed solving them. I was a bit patchy and messed up Killer multiple times, but the overall quality of Sudokus was quite good.
Thanks Aashay! You started very well actually but hit a roadblock somewhere - either the killer or the slightly unfamiliar variants. |
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rakesh_rai
Posts: 774
Country : India | kishy72 - 2019-09-21 8:18 PM
Great set of sudokus Rakesh ! I thoroughly enjoyed the contest and it was hard to choose a favourite amongst these.However, if I were to pick a few, LK, X-Sums and Equal sum Lines would top the list in that order.
The sudokus were very nicely constructed and were clean as a whistle.I was mostly concerned about Kid sudoku as I haven't seen this type much before in the past.Fortunately, I got through that rather fast after getting the idea.I had major hiccups in Rhombus and Diagonal towards the end but thankfully I didn't break those.
Thanks a lot for the contest !
Thanks Kishore! Kid sudoku clues were kept simple with the only catch being that those rows/columns were blank. Otherwise, it was easy to deduce the different combinations to make 99999. |
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rakesh_rai
Posts: 774
Country : India | harmeet - 2019-09-23 10:40 PM
Beautiful set of puzzles. Loved x-sum, kid, and unique sums. Broke renban and got overwhelmed with rhombus during the test.
Thanks Harmeet! Unfortunate that you were not able to complete Renban and Rhombus within the contest duration. |
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rakesh_rai
Posts: 774
Country : India | priyambhushan - 2019-09-24 9:37 PM
Great set of sudokus, enjoyed this contest greatly! especially loved the equal sum lines, kid sudoku and odd even bridge, all of which I tried for the first time.
Thanks Rakesh! Thanks Priyam! Glad you enjoyed the contest. |
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mstang
Posts: 74
Country : United States | mstang posted @ 2019-09-25 2:47 AM | 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 | | | Which set of puzzles did you like the most? | Little Killer Sudoku | |
Loved the Little Killer and Kid sudokus. Thanks for a very nice contest! |
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aashay
Posts: 46
Country : India | aashay posted @ 2019-09-25 11:06 AM Yeah, I broke the Killer 4 times, which ruined my contest, leaving me little time to attempt the unfamiliar variants, which I had left for the end. |
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rakesh_rai
Posts: 774
Country : India | Thanks to all 148 participants!
Congratulations to all winners, especially all participants who scored above 80. No surprises in the top 5 - Kota Morinishi, Seungjae Kwak, Hideaki Jo, Endo Ken and Michael Ley.
It was a challenging test - with some easy ones to start, some unfamiliar variants and some moderate to tough grids in the end. Also, special mention for Vijaya, Ritaban, Priyam, Aashay, Swaroop and Gaurav who were able to solve 10+ grids during the contest.
Rhombus and Equal Sum Lines were the least solved variants and Mini and Classic were obviously the most solved ones.
Hope you enjoyed the contest. And good luck to everyone for the upcoming WSC! |
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zorko
Posts: 11
Country : Bulgaria | zorko posted @ 2019-09-26 7:14 PM | 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 | | | Which set of puzzles did you like the most? | Odd Even Bridge Sudoku | |
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vjain9
Posts: 44
Country : India | vjain9 posted @ 2019-09-28 6:35 PM Great work Rakesh ! loved the variants .... ( did solve the IB ones at leisure) . Just wondering what the title was all about ? PENTAKAIDECA ( I must be missing something ! ) ? |
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rakesh_rai
Posts: 774
Country : India | vjain9 - 2019-09-28 6:35 PM
Great work Rakesh ! loved the variants .... ( did solve the IB ones at leisure) . Just wondering what the title was all about ? PENTAKAIDECA ( I must be missing something ! ) ?
Pentakaideca = "a fifteen sided polygon" - If you look at the contest image, it is a fifteen sided polygon, loosely representing fifteen sudokus in this contest. |
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vjain9
Posts: 44
Country : India | vjain9 posted @ 2019-10-01 10:43 PM Interesting ! |
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rajeshk
Posts: 542
Country : India | rajeshk posted @ 2019-10-07 8:17 PM When the Sudoku rating will be updated based upon this test?
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vjain9
Posts: 44
Country : India | vjain9 posted @ 2019-10-09 2:33 PM Rakesh, The solution booklet please ! |
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Administrator
Country : India | |
Pentakaideca - LMI September Monthly Sudoku Test - 20th to 25th Sep 2019