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Posts: 187
 
Location: New Zealand | Hi Richard,
For puzzle 16 Sudokakuro, the answer key should be 235146, 261543 (and a matching solution grid).
Looks like a good collection of puzzles! :)
Also a question about Filled Loop:
In the example the loop is always one cell wide where the pentominoes touch.
Is it possible for three pentominoes to meet at a point that is not on the loop-edge?
e.g. meeting like this:
I
I
I
I
ILLLL
YL
Y
YY
Y
Edited by kiwijam 2013-09-03 9:55 AM
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WCPN Author
Posts: 191
Location: The Netherlands | Oops, you are absolutely right.
I feel pretty silly...
New IB will be uploaded. |
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WCPN Author
Posts: 191
Location: The Netherlands | kiwijam - 2013-09-03 9:42 AM
Also a question about Filled Loop:
In the example the loop is always one cell wide where the pentominoes touch.
Is it possible for three pentominoes to meet at a point that is not on the loop-edge?
e.g. meeting like this:
I
I
I
I
ILLLL
YL
Y
YY
Y
No, this is not possible. Pentominos don't touch each other diagonally. |
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Posts: 69
Location: Germany | Hi Richard,
I'm definitly looking forward to this. Just printed the practice material, there are some puzzles, I wanted to do for a long time. Unfortunately my solving percentage in the puzzle portal dropped a lot during the last years, there are just too many puzzles out there to keep up everywhere.
However, I'm a little bit confused about your answer to kiwijam. His example seems valid according to the rules in the instruction booklet. |
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WCPN Author
Posts: 191
Location: The Netherlands | Realshaggy - 2013-09-03 4:16 PM
However, I'm a little bit confused about your answer to kiwijam. His example seems valid according to the rules in the instruction booklet.
Now something funny is happening.
Of all the puzzles of this type that I published in the puzzle portal so far, none had a question like this in the comments. Also the test solvers didn't mention something about it.
But in fact you (and kiwijam) are right. Following the instructions, some 'unwanted' positioning of pentos is possible.
This type is getting incredible hard if pentos are allowed to 'fit together like jigsaw pieces'. That was not my intention when I developed the first puzzle of this type a few years ago.
I think it is wise to rephrase the instructions or add a sentence.
Something like: 'each pentomino can touch one or more other pentominos, but a pentomino segment can touch only one other pentomino'.
Is that a phrase that makes it all more clear or does anyone have a better alternative? |
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Posts: 69
Location: Germany | I remember a discussion whether or not three pentominos can met at a point, but I can't find the particular puzzle right now. It might also be one of your "Pentominoschleifen" or one of Luigis puzzles. I also solved two of these, but I can't remember that I had problems with the description. However, as far as I remember, I found them much harder than other solvers difficulty rating intended. Maybe the ones I solved are unique even without it, and it makes them much easier to use this additional rule.
I think "There is no point where three or more pentominos met." is a short addition that makes everything clear. This also excludes the case of diagonally touching pentominos, because only two would violate the loop rule, and more is not allowed.
Edited by Realshaggy 2013-09-03 5:09 PM
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WCPN Author
Posts: 191
Location: The Netherlands | Realshaggy - 2013-09-03 5:08 PM
There is no point where three or more pentominos meet.
Added this to the instructions.
New IB is uploaded. |
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WCPN Author
Posts: 191
Location: The Netherlands | Two more links to extra practise puzzles:
As easy as ABC - No Touch
Sudokakuro
Before the test starts I will publish the last two practise puzzles:
As easy as Chaos ABC (Thursday)
Pentomino in the Box (Friday)
Enjoy! |
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Triplets & Triangles Author
Posts: 63
Location: United Kingdom | Another question about Prime Domino. If there are no shaded squares in a domino, is the total necessarily non-prime? |
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WCPN Author
Posts: 191
Location: The Netherlands | David McNeill - 2013-09-05 7:46 PM
Another question about Prime Domino. If there are no shaded squares in a domino, is the total necessarily non-prime?
According to the instructions it is possible that two white cells in one domino add to a prime number. |
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WCPN Author
Posts: 191
Location: The Netherlands | Richard - 2013-09-04 3:39 PM
Before the test starts I will publish the last two practise puzzles:
As easy as Chaos ABC (Thursday)
Pentomino in the Box (Friday)
Today the Easy as Chaos ABC was published. |
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Posts: 30
Location: France | Wow, can't find the break in any killer skyscrapers, not even in the one from the booklet ...
Can someone give me a nudge on any of the three please ? |
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Location: India | DTGT starts on FridayConsidering that there are other offline championships, DTGT will be starting 12 hours prior to the usual start time. Please check the submission page for exact timing in your timezone.
The end time remains unchanged.
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WCPN Author
Posts: 191
Location: The Netherlands | Richard - 2013-09-04 3:39 PM
Before the test starts I will publish the last two practise puzzles:
As easy as Chaos ABC (Thursday)
Pentomino in the Box (Friday)
And here is the last practise puzzle: Pentomino in the Box
The test starts in less than two hours.
Good luck to all participants!
Have fun!
Richard |
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Posts: 35
Location: United States | Ugh. Not pleased with my performance, but the puzzles were great. However, I did lose about 10 minutes on an error in the instructions for 12 (Spiral City). Instructions claim the numbers go from 1 to 32, but there are only 30 segments. My math on the two center rows just refused to work until I threw out the 31 and 32 segments. Probably could have figured out one or two other puzzles in the time, but it still would've been awful. :)
Regardless, thanks for the entertaining set! |
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Location: India | FoxFireX - 2013-09-07 9:05 AM
on an error in the instructions for 12 (Spiral City). Instructions claim the numbers go from 1 to 32, but there are only 30 segments. You are right. Just added a note in the Submission page about this typo. |
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Hex Slitherlink Author
Posts: 145
Location: France | The puzzles were indeed really really good -- one of my favorite recent tests. But I had terrible luck with timing, finishing the Sudokakuro just 5 seconds too late (of course it'd have taken another 10 seconds to copy down the answer key). Sigh. |
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Location: India | Link to score page : http://logicmastersindia.com/2013/09P/score.asp |
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Posts: 187
Location: New Zealand | Great puzzles Richard, thank you! I'm glad they were easier than most of your portal ones.
One comment on the submission page: Is it possible to have the puzzle numbers (1-20) included as well as the names? It would be much faster to find the correct location to enter the answer, especially as some of the puzzles had similar names. |
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| | 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 | | | What was your opinion about the answer key extraction? | Mostly perfect answer keys | | | 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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Toketa? Selection Author
Posts: 43
Location: Japan | | 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 medium difficult puzzles | | | What did you think about the puzzle quality of the test? | Fairly Nice | | | What was your opinion about the answer key extraction? | Perfect answer keys | | | 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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Classics & Regions (PR 2016/17) Author
Posts: 170
Location: Germany | Looks like the spiral city construction was solvable without the loop part... I was quite confused when the form wanted the number of angles. :) |
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Posts: 10
Location: 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? | Just right | | | What did you think about the puzzle quality of the test? | Very nice | | | What was your opinion about the answer key extraction? | Perfect answer keys | | | 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 | |
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Sudoku Grand Prix - Turkish Round Author
Posts: 34
Location: Turkey | | 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 | | | What was your opinion about the answer key extraction? | Perfect answer keys | | | 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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| | 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? | Fairly Nice | | | What was your opinion about the answer key extraction? | Perfect answer keys | | | 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 | |
A good test, but hard to prepare for. It was 16 unusual types, some with rather specific rules. The LMD practice material helped a little, but some of the LMD puzzles used subtly different rules from the test. Despite doing all of them, I still felt shaky going into the test. |
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DTGT — LMI September Puzzle Test — 7th-9th September 2013
