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Fred76
Posts: 337
 
Country : Switzerland | Fred76 posted @ 2013-04-16 8:59 PM In the IB, rules of sudokus: "placement (shape) sudoku", "thermo-sudoku", "killer sudoku" and "movable digits" contain words "bolded region" instead of "bolded 3x3 box".
Will they all be irregular or is it just a little lack of precision of rules (examples have 3x3 boxes, except movable digits)?
Can we know exactly which sudokus will have irregular regions (example of movable digits has irregular regions, but the actual puzzle in WSC 2011 had 3x3 boxes)?
Thanks,
Fred
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skywalker
Posts: 42
Country : Serbia | Fred76 - 2013-04-16 8:59 PM
In the IB, rules of sudokus: "placement (shape) sudoku", "thermo-sudoku", "killer sudoku" and "movable digits" contain words "bolded region" instead of "bolded 3x3 box".
Will they all be irregular or is it just a little lack of precision of rules (examples have 3x3 boxes, except movable digits)?
Can we know exactly which sudokus will have irregular regions (example of movable digits has irregular regions, but the actual puzzle in WSC 2011 had 3x3 boxes)?
Thanks,
Fred
Movable digits has irregular regions, all other sudokus are with 3x3 boxes.
P.S. In all three sudokus (placement, thermo, killer ) will be some non-box shapes for sure...
Branko |
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Fred76
Posts: 337
Country : Switzerland | Fred76 posted @ 2013-04-17 1:05 AM Thanks ! |
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Administrator
  
Country : India | All sudokus in this contest can be solved online as well. Selected examples are available for online solving for practice purpose.
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robertolee
Posts: 1
Country : Taiwan | Sorry, I don't still understand the 16th question. Original, I have the same idea with Wicktroll. But after Para's reply, I was confused. Could anyone explain how you solve this puzzle at first 3 or 5 steps? thanks.
About Para's reply, he said "The rule only states that one of the neighbors of a GIVEN digit, must contain that digit." what is the GIVEN digit? thanks. |
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skywalker
Posts: 42
Country : Serbia | robertolee - 2013-04-17 8:22 PM
Sorry, I don't still understand the 16th question. Original, I have the same idea with Wicktroll. But after Para's reply, I was confused. Could anyone explain how you solve this puzzle at first 3 or 5 steps? thanks.
About Para's reply, he said "The rule only states that one of the neighbors of a GIVEN digit, must contain that digit." what is the GIVEN digit? thanks.
For example: 6 is GIVEN digit (left grid ) on R6C1. This digit 6 in solved grid must be on R5C1 or R6C2 and for sure this 6 doesn't leave region (bottom left ).
GIVEN 6 on R5C1 must move on some of next cells: R5C2, R6C1, R4C1. First digit 6 is on R5C1 or R6C2, so that leaves only R4C1 as position for second 6.
After that you can conclude that first 6 is on R6C2.
You can try to continue using similar logic...
Branko |
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Administrator
Country : India | About Movable Digits, in pictures
Any given digit in left grid, must appear at one of the 4 adjacent cells in the right grid.
In the grid below look at the marked cell with "A" in the left grid. It means, "A" must appear at least once in the marked cells in the right grid. (It could appear twice, but at least once ).
Now here is the sudoku from the instruction booklet, with the solution next to it. You can see the rule being applied for each of the given digits in the left grid.
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Mahyar
Posts: 8
Country : Iran | Mahyar posted @ 2013-04-18 1:34 PM Hello Admin,
Thank you for explaining Movable Digits rule.
Everything is clear.... |
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skywalker
Posts: 42
Country : Serbia | Thanks, Deb.
Branko
Edited by skywalker 2013-04-18 10:48 PM
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Administrator
Country : India | Announcements 1 ) Password protected Sudoku booklet is uploaded. It has 9 pages. There is no cover page or points table.
2 ) Paper only link : http://logicmastersindia.com/2013/04S/?paper=1 Use this link if you are not planning to use online solving at all. (Paper Only link will keep your browser less cluttered and your browser uses less memory )
3 ) Link to score page : http://logicmastersindia.com/2013/04S/score.asp
4 ) This thread will be made restricted so that players can freely discuss about the competition.
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Administrator
Country : India | You can
see this message after completing the test.
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Para
Posts: 315
Country : The Netherlands | Para posted @ 2013-04-20 1:52 AM Is the last post important, as I'm not allowed to read it except for the words "You can". |
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Administrator
Country : India | Para - 2013-04-20 1:52 AM
Is the last post important, as I'm not allowed to read it except for the words "You can". It is just a test message. |
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Administrator
Country : India | WPF Sudoku Grand Prix — Serbian Round has started. Good luck to all.
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Cyclone
Posts: 8
Country : Canada | Cyclone posted @ 2013-04-20 7:40 AM Now here is the sudoku from the instruction booklet, with the solution next to it. You can see the rule being applied for each of the given digits in the left grid.
There is an error in the example. There is a 3 where there should be a 4 in the puzzle. I came upon this error when, in the first two columns, there was no 4. Therefore, because no 4 could be entered legally in the first column, the demo has no valid solution. This is confirmed with five 4s and seven 3s in the puzzle layout.
Additionally, I find it hilarious that my own posts are restricted from my view during the test. LMAO
Cyclone
Edited by Cyclone 2013-04-20 7:42 AM
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debmohanty
Country : India | Cyclone - 2013-04-20 7:40 AM
Additionally, I find it hilarious that my own posts are restricted from my view during the test. LMAO
I find it more hilarious that you still didn't understand the rule. |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2013-04-20 7:50 AM | How balanced do you think the puzzle types of this test were? | Fairly balanced | | | 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 | | | How did you feel about the length / time limit for this test? | A bit too many puzzles | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2013-04-20 8:17 AM Very nice tennis theme through all puzzles.
It will be interesting to watch results if someone will solve all puzzles in time limit, because this time it will be difficult quest I think.
Little Killer got me, I spent a lot of time there and couldn't solve it, but I had to try for that massive 157 points.
Almost same happened with Movable digits, but luckilly I solved it. And it was my favourite puzzle from the set (together with Frameless).
Thanks for great test! |
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spelvin
Posts: 20
Country : United States | spelvin posted @ 2013-04-20 8:55 AM I'm embarrassed that I missed so many of the tennis references during the test... after time ran out I asked my fiancee (who also competed) what she made of the recurring 15-30-40 and then everything clicked and I started to notice the theme in puzzle after puzzle...
Like Gotroch, I gambled on the Little Killer, but for me it paid off. Looking forward to solving the ones I skipped at a leisurely pace. My compliments to the chef! |
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TiiT
Posts: 139
Country : Estonia | TiiT posted @ 2013-04-20 3:40 PM | How balanced do you think the puzzle types of this test were? | Perfectly balanced | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | How did you feel about the length / time limit for this test? | Just right | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Caca_CZ
Posts: 2
Country : Czech Republic | Caca_CZ posted @ 2013-04-20 6:00 PM | How balanced do you think the puzzle types of this test were? | Fairly balanced | | | 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 | | | How did you feel about the length / time limit for this test? | Just right | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Joo M.Y
Posts: 72
Country : South Korea | Joo M.Y posted @ 2013-04-20 7:11 PM | How balanced do you think the puzzle types of this test were? | Perfectly balanced | | | 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 | | | How did you feel about the length / time limit for this test? | Just right | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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An LMI player
| An LMI player posted @ 2013-04-20 7:57 PM | How balanced do you think the puzzle types of this test were? | Fairly balanced | | | 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 | | | How did you feel about the length / time limit for this test? | Way too many puzzles (too little time) | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | All puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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spelvin
Posts: 20
Country : United States | spelvin posted @ 2013-04-20 8:12 PM | How balanced do you think the puzzle types of this test were? | A bit skewed | | | 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 | | | How did you feel about the length / time limit for this test? | A bit too many puzzles | | | Of the puzzles you solved/attempted, how well did their point values reflect the difficulty/time spent? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Ours brun
Posts: 148
Country : France | Cyclone - 2013-04-20 3:40 AM
There is an error in the example. There is a 3 where there should be a 4 in the puzzle. I came upon this error when, in the first two columns, there was no 4. Therefore, because no 4 could be entered legally in the first column, the demo has no valid solution. This is confirmed with five 4s and seven 3s in the puzzle layout.
No, there is not. This was explained in a very concise and clear way a few messages ago. See in particular this sentence, which seems limpid to me:
Para - 2013-04-04 7:44 AM
This doesn't mean that every cell must be one of its given neighbours [...]
All digits which are given have to be in the final grid, but two given digits can correspond to the same definitive one; and a definitive digit does not necessarily have to correspond to a given one, since this is nowhere mentioned in the rules. The puzzle is perfectly valid, the explanations are just fine, the only problem here is the attitude you are showing despite the fact that you are wrong. So please learn to be slightly less arrogant and at the least, try to be respectful of the benevolent work of people who spend countless hours trying to help other players. |
@ 2013-04-16 8:59 PM (#10649 - in reply to #10615) (#10649) Top