SM 2024 R2 - Odd Even & Hybrids (8th - 14th Mar) Score Discuss
PR 2024 R3 - Evergreens & MII (29th Mar - 4th Apr) has started Discuss
DTGT — LMI September Puzzle Test — 7th-9th September 201359 posts • Page 1 of 3 • 1 2 3
@ 2013-08-23 8:56 AM (#12409) (#12409) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2013-08-23 8:56 AM



@ 2013-08-23 9:07 AM (#12410 - in reply to #12409) (#12410) Top

swaroop2011




Posts: 668
500100202020
Country : India

swaroop2011 posted @ 2013-08-23 9:07 AM

so whats full form of DTGT ;)
@ 2013-08-23 9:14 AM (#12411 - in reply to #12410) (#12411) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2013-08-23 9:14 AM

swaroop2011 - 2013-08-23 9:07 AM

so whats full form of DTGT ;)
Well, Two letters should be obvious from the logo. Remaining two can be guessed.
@ 2013-08-23 9:19 AM (#12412 - in reply to #12409) (#12412) Top

swaroop2011




Posts: 668
500100202020
Country : India

swaroop2011 posted @ 2013-08-23 9:19 AM

ohk i think i got it :)
@ 2013-08-24 12:36 AM (#12425 - in reply to #12412) (#12425) Top

tamz29



Posts: 225
10010020
Country : Thailand

tamz29 posted @ 2013-08-24 12:36 AM

Finally a puzzle test.
@ 2013-08-29 5:58 AM (#12490 - in reply to #12409) (#12490) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2013-08-29 5:58 AM


Logic Masters India announces September Puzzle Test — DTGT

Dates : 7th — 9th September

Instruction Booklet & Submission : here

Author : Richard Stolk

@ 2013-08-29 7:27 AM (#12491 - in reply to #12409) (#12491) Top

deu



Posts: 69
202020
Country : Japan

deu posted @ 2013-08-29 7:27 AM

In Prime Domino, can a domino consist of two grey cells?
If so, example puzzle has 2 solutions at bottom right.
@ 2013-08-29 11:28 AM (#12497 - in reply to #12491) (#12497) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-08-29 11:28 AM

deu - 2013-08-29 7:27 AM

In Prime Domino, can a domino consist of two grey cells?
If so, example puzzle has 2 solutions at bottom right.


Yes, it is possible that two grey cells belong to the same domino.
New IB uploaded, two digits swapped in the bottom right.
Sorry for inconvenience.
@ 2013-08-29 3:06 PM (#12498 - in reply to #12409) (#12498) Top

tamz29



Posts: 225
10010020
Country : Thailand

tamz29 posted @ 2013-08-29 3:06 PM

In the last puzzle, can black cell touch the border diagonally?
@ 2013-08-29 3:08 PM (#12499 - in reply to #12498) (#12499) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-08-29 3:08 PM

tamz29 - 2013-08-29 3:06 PM

In the last puzzle, can black cell touch the border diagonally?

Yes, that is allowed.
@ 2013-08-30 1:43 AM (#12503 - in reply to #12409) (#12503) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-08-30 1:43 AM

As I have written in the IB, here is a list of links to more practise material in the puzzle portal of Logic Masters Germany.

Here we go:
Killer Skyscrapers: easy; easy
Regional Yajilin: medium; easy
Capsules: very easy; medium
Masyu Battleships: very easy; easy
Easy as Chaos ABC: easy
City construction: hard; medium; hard
Easy as no ABC – No Touch: medium
Spiral City Construction: medium; medium
Filled Loop: medium; very hard; hard; medium
Pentomino in the Box: hard; hard
Japanese Sums Pentominos: very easy; very easy
Sudokakuro: easy
X-Sums Sudoku: easy
Domino Loop: medium; medium
Prime domino: easy; easy
Blackout Domino: hard; medium

In June all my puzzles in the portal were XL; same rules but larger grids. All these puzzles are (much) harder than in the real test. Still, they can be interesting from a practise point of view:
Regional Yajilin
Capsules
Masyu Battleships
Blackout Domino

If you have any questions about these extra practise puzzles, don’t hesitate to ask. Either here or in the portal.
In the coming days I will publish a few more practise puzzles. I will keep you all informed about it.
Have fun and good luck!
@ 2013-08-31 7:54 PM (#12519 - in reply to #12503) (#12519) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-08-31 7:54 PM

Richard - 2013-08-30 1:43 AM

In the coming days I will publish a few more practise puzzles. I will keep you all informed about it.



Meanwhile two extra practise puzzles are published in the portal:

X-Sums Sudoku
Capsules
@ 2013-09-02 11:35 PM (#12552 - in reply to #12519) (#12552) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-02 11:35 PM

I received a question about Japanese sums Pentominos:

"Is the sum in both different 'legs' of the U-pentomino presented as one sum or as two different sums?"

The answer is that both different 'legs' have their own sum (of one digit).
By choosing the phrase '... blocks of cells ...' I have tried to take away doubts on this issue.

Later I will try to attach a small image to this message that should make it even more clear.



Administrator edited to add the image
@ 2013-09-03 9:42 AM (#12558 - in reply to #12409) (#12558) Top

kiwijam



Posts: 181
10020202020
Country : New Zealand

kiwijam posted @ 2013-09-03 9:42 AM

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
@ 2013-09-03 9:58 AM (#12559 - in reply to #12558) (#12559) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-03 9:58 AM

Oops, you are absolutely right.
I feel pretty silly...

New IB will be uploaded.
@ 2013-09-03 10:03 AM (#12560 - in reply to #12558) (#12560) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-03 10:03 AM

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.
@ 2013-09-03 4:16 PM (#12565 - in reply to #12560) (#12565) Top

Realshaggy



Posts: 69
202020
Country : Germany

Realshaggy posted @ 2013-09-03 4:16 PM

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.
@ 2013-09-03 4:50 PM (#12566 - in reply to #12565) (#12566) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-03 4:50 PM

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?
@ 2013-09-03 5:08 PM (#12567 - in reply to #12566) (#12567) Top

Realshaggy



Posts: 69
202020
Country : Germany

Realshaggy posted @ 2013-09-03 5:08 PM

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
@ 2013-09-03 7:02 PM (#12568 - in reply to #12567) (#12568) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-03 7:02 PM

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.
@ 2013-09-04 3:39 PM (#12578 - in reply to #12519) (#12578) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-04 3:39 PM

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!
@ 2013-09-05 7:46 PM (#12589 - in reply to #12409) (#12589) Top

David McNeill



Posts: 63
202020
Country : United Kingdom

David McNeill posted @ 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?
@ 2013-09-05 8:06 PM (#12590 - in reply to #12589) (#12590) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-05 8:06 PM

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.
@ 2013-09-05 10:49 PM (#12593 - in reply to #12578) (#12593) Top

Richard



Posts: 191
10020202020
Country : The Netherlands

Richard posted @ 2013-09-05 10:49 PM

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.
@ 2013-09-06 5:11 AM (#12600 - in reply to #12409) (#12600) Top

Grizix



Posts: 30
20
Country : France

Grizix posted @ 2013-09-06 5:11 AM

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 ?
DTGT — LMI September Puzzle Test — 7th-9th September 201359 posts • Page 1 of 3 • 1 2 3
Jump to forum :
Search this forum
Printer friendly version