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Realshaggy
Posts: 69
Country : Germany | Bram28 - 2013-12-14 5:55 AM
Does the Sudoku XV in the IB have 2 solutions? I have a different solution and I don't see any mistakes in it.
Of course the XV has multiple solutions on it's own (without the grid to the left ). You can see that even without solving. In a unique XV at least one of the givens has to be a 1,4,6 or 9. Otherwise you could use a permutation (1,4,6,9 )-> (9,6,4,1 ) to create another solution. Edited by Realshaggy 2013-12-13 3:22 PM
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Richard
Posts: 191
Country : The Netherlands | Richard posted @ 2013-12-13 4:34 PM Richard - 2013-12-10 1:15 AM
In the coming days I will publish some more practise puzzles (other types than above) in the portal of Logic Masters Germany. I will keep you all informed about it.
The last two practice puzzles are online:
Sudoku XV: easy
Missing Arrow Sudoku: easy
Have fun with these last two appetizers!
I wish all participants a fun and pleasant test. Good luck to all! |
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rakesh_rai
Posts: 774
Country : India | rakesh_rai - 2013-12-08 5:55 PM
Is online solving enabled for this test?
Since this is not yet answered, does this mean online solving will not be available? |
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swaroop2011
Posts: 668
Country : India | can anyone explain me Rules of Greater or lesser sudoku ? |
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debmohanty
Country : India | rakesh_rai - 2013-12-13 7:33 PM
rakesh_rai - 2013-12-08 5:55 PM
Is online solving enabled for this test?
Since this is not yet answered, does this mean online solving will not be available? Right, we are not having online solving this time. I was hoping to get it done this week, but tied up with many other things to focus on online solving (which needed a minor change in the interface because of IG ) |
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debmohanty
Country : India | swaroop2011 - 2013-12-13 8:36 PM
can anyone explain me Rules of Greater or lesser sudoku ? Only one of the rules is true. It is part of solving to figure out the correct rule. See Sudoku A or B IB for more details.
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swaroop2011
Posts: 668
Country : India | so it means that only the two cells where clue is given in center are of importance. And then the clue is either greater or smaller than other digit that will be part of those two cells ? |
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rakesh_rai
Posts: 774
Country : India | swaroop2011 - 2013-12-13 8:47 PM
so it means that only the two cells where clue is given in center are of importance. And then the clue is either greater or smaller than other digit that will be part of those two cells ?
The number in the clue is greater than the other cell for ALL given clues
OR
The number in the clue is smaller than the other cell for ALL given clues
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devarajand
Posts: 114
Country : India | In practice material Scattered Sudoku. After entering 5 at R2C5, 2 at R8C9 , non of the colored cells can contain 2? |
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swaroop2011
Posts: 668
Country : India | Thanks got it Deb and Rakesh :) |
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swaroop2011
Posts: 668
Country : India | devarajand - 2013-12-13 9:43 PM
In practice material Scattered Sudoku. After entering 5 at R2C5, 2 at R8C9 , non of the colored cells can contain 2?
hie
i think entering 5 at r2c5 itself is a wrong step , in that row 5 can be at r2c8 : ) |
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achan1058
Posts: 80
Country : Canada | | 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 the point values reflect the difficulty? | Many puzzles were worth too much or too little | | | What was your opinion of the booklet formatting and printing? | Just right | |
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TiiT
Posts: 139
Country : Estonia | TiiT posted @ 2013-12-14 6:59 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? | A bit too few puzzles | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Yuhei Kusui
Posts: 42
Country : Japan | | 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 the point values reflect the difficulty? | Many puzzles were worth too much or too little | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Bram28
Posts: 35
Country : The Netherlands | Bram28 posted @ 2013-12-14 8:37 PM Bram28 - 2013-12-13 9:55 AM
Does the Sudoku XV in the IB have 2 solutions? I have a different solution and I don't see any mistakes in it.
In your different solution, have you taken into account that there must be a specified number of corresponding digits per row in both grids on the same page?
Ah! No, I had not. I am notoriously bad at reading the full instructions ... even as I wondered what those numbers in the middle were doing there ...
Edited by Bram28 2013-12-14 8:39 PM
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Bram28
Posts: 35
Country : The Netherlands | Bram28 posted @ 2013-12-14 10:45 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? | A bit too many puzzles | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
Thanks for the nice test Richard! |
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An LMI player
| An LMI player posted @ 2013-12-15 6:42 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 the point values reflect the difficulty? | Many puzzles were worth too much or too little | | | What was your opinion of the booklet formatting and printing? | Just right | |
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wgryciuk
Posts: 24
Country : Poland | | 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 the point values reflect the difficulty? | 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 @ 2013-12-15 9:54 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? | Too many hard puzzles | | | 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? | Way too many puzzles (too little time) | | | Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | I have a different complaint | |
This time unfriendly contest for players without printers. Edited by An LMI player 2013-12-15 10:04 PM
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2013-12-15 10:50 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 the point values reflect the difficulty? | Many puzzles were worth too much or too little | | | What was your opinion of the booklet formatting and printing? | Just right | |
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RALehrer
Posts: 31
Country : United States | | 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? | Too many medium difficult puzzles | | | 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 the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Too few pages / too small grids | |
I attempted the chaos renban only after the test...and found it to be easier than some puzzles worth 30-40 points. I know it can vary with individual strengths, but that's a hell of a lot of variation! |
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achan1058
Posts: 80
Country : Canada | RALehrer - 2013-12-15 3:21 PM
I attempted the chaos renban only after the test...and found it to be easier than some puzzles worth 30-40 points. I know it can vary with individual strengths, but that's a hell of a lot of variation! I agree. The chaos renban took me 10 minutes, while the other 100 pointer, x is alive took me 20. There's a few others that I think are incorrectly valued too, but the chaos renban is probably the biggest sore thumb I saw. |
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Khazimir
Posts: 1
Country : France | | 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? | 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 the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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Richard
Posts: 191
Country : The Netherlands | Richard posted @ 2013-12-16 2:43 AM achan1058 - 2013-12-16 2:34 AM
RALehrer - 2013-12-15 3:21 PM
I attempted the chaos renban only after the test...and found it to be easier than some puzzles worth 30-40 points. I know it can vary with individual strengths, but that's a hell of a lot of variation! I agree. The chaos renban took me 10 minutes, while the other 100 pointer, x is alive took me 20. There's a few others that I think are incorrectly valued too, but the chaos renban is probably the biggest sore thumb I saw.
Points distribution is mostly a very hard part of writing a test. I am lucky to have a small team of testers, who are all well experienced sudoku solvers. There is quite some variation between their timings, so I understand the responses here. Especially the Chaos Renban puzzle has a shortcut that makes it easier solvable; the 5's play a crucial role in all five renban groups. Noticing that makes the solving process a lot faster.
It is always worth looking to high pointers in a test, even if you are not among top solvers. It might be better to look at puzzles that you are good at, no matter how much points they are worth. |
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An LMI player
| An LMI player posted @ 2013-12-16 3:06 AM | 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? | 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 the point values reflect the difficulty? | Most puzzles were worth the right amount | | | What was your opinion of the booklet formatting and printing? | Just right | |
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@ 2013-12-13 3:01 PM (#13807 - in reply to #13804) (#13807) Top