@ 2020-04-11 6:00 PM (#27934 - in reply to #27927) (#27934) TopPosts: 234
Country : Russia
Riad Khanmagomedov posted @ 2020-04-11 6:00 PM
Puzlifouk - 2020-04-11 5:03 PM
Hello everyone, Hello Riad,
I am extremely happy to face this contest again, which is for me the best event of the year!
And yet, because of the confinement, I forgot that it was the period and I missed the start. Why didn't you remind us earlier in a post that the start was coming? I'm really disappointed for that ...
Take care of you all.
Hello everyone, Hello Riad,
I am extremely happy to face this contest again, which is for me the best event of the year!
And yet, because of the confinement, I forgot that it was the period and I missed the start. Why didn't you remind us earlier in a post that the start was coming? I'm really disappointed for that ...
Take care of you all.
Thank you for your kind words!
@ 2020-04-11 6:02 PM (#27935 - in reply to #27928) (#27935) TopPosts: 234
Country : Russia
Riad Khanmagomedov posted @ 2020-04-11 6:02 PM
SP1 - 2020-04-11 5:12 PM
Puzzle 10:
I think the definition of "streets" is ambiguous.
To clarify the definition, I consider a following 7x7 example:
~~~~##~
~##~##~
~##~##~
~~~~~~~
###~##~
###~##~
###~~~~
~ means white cell and # means dark cell.
I guess there are 6 streets in this grid.
detail:
R1C1 -> R1C4
R4C1 -> R4C7
R7C4 -> R7C7
R1C1 -> R4C1
R1C4 -> R7C4
R1C7 -> R7C7
Is this interpretation correct?
Puzzle 10:
I think the definition of "streets" is ambiguous.
To clarify the definition, I consider a following 7x7 example:
~~~~##~
~##~##~
~##~##~
~~~~~~~
###~##~
###~##~
###~~~~
~ means white cell and # means dark cell.
I guess there are 6 streets in this grid.
detail:
R1C1 -> R1C4
R4C1 -> R4C7
R7C4 -> R7C7
R1C1 -> R4C1
R1C4 -> R7C4
R1C7 -> R7C7
Is this interpretation correct?
Correct!
@ 2020-04-11 6:05 PM (#27936 - in reply to #27929) (#27936) TopPosts: 234
Country : Russia
Riad Khanmagomedov posted @ 2020-04-11 6:05 PM
panista - 2020-04-11 5:28 PM
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Without the digit 2, the example does not have a unique solution.
@ 2020-04-11 6:06 PM (#27937 - in reply to #27933) (#27937) TopPosts: 55
Country : India
pranavmanu posted @ 2020-04-11 6:06 PM
Riad Khanmagomedov - 2020-04-11 5:55 PM
Take a look at an example of the Town puzzle. Let's delete the given digit 2. Stefano assumed that the solution would be with a dark square. But the verifier (Deb or I) can declare the middle of the example white. The digit 2 is necessary for the uniqueness of the solution.
Take a look at an example of the Town puzzle. Let's delete the given digit 2. Stefano assumed that the solution would be with a dark square. But the verifier (Deb or I) can declare the middle of the example white. The digit 2 is necessary for the uniqueness of the solution.
But the rules of the puzzle state no 2*2 area can be completely white, which ensures that middle of the mini example has to be a 2*2 block of shaded cells!!,based on the other 0 clues. They cant be taken as white as that is not even a solution in the first place.I dont see how uniqueness comes into the picture here?? How is the outside clue 2 essential as per the rules?
Also, going by your statement,every row or column that has shaded cells should be clued with an outside digit, or else they will be assumed by you as white?
@ 2020-04-11 6:26 PM (#27938 - in reply to #27868) (#27938) TopPosts: 136
Country : India
anurag posted @ 2020-04-11 6:26 PM
Prnav: That's the whole point! If you read my first query regarding this puzzle, it was there to verify the same thing, whether the 2x2 constraint has to be considered during the design (and I am sure it has to be). But now, the author's statement implies NOT. Which is surprising. Apparently nice and easy puzzle, but so much discussion surrounding it.
@ 2020-04-11 6:56 PM (#27939 - in reply to #27868) (#27939) Top
Posts: 11
Country : Indonesia
athin posted @ 2020-04-11 6:56 PM
Puzzle 10:
I'm pretty confident about my understanding of puzzle 10, so I may rephrase the definition of streets as: "if you treat the final board as a crossword, then the street is a single word, so the number of street will be the number of words in this crossword."
And also, I have to agree that without 2 in the example, the solution should be unique as there shouldn't be any 2x2 of white cells. The proposed "alternative solution" fails this constraint.
This is my opinion btw, surely it will be great for the organizers to clarify this.
I'm pretty confident about my understanding of puzzle 10, so I may rephrase the definition of streets as: "if you treat the final board as a crossword, then the street is a single word, so the number of street will be the number of words in this crossword."
And also, I have to agree that without 2 in the example, the solution should be unique as there shouldn't be any 2x2 of white cells. The proposed "alternative solution" fails this constraint.
This is my opinion btw, surely it will be great for the organizers to clarify this.
@ 2020-04-11 6:58 PM (#27940 - in reply to #27868) (#27940) TopPosts: 11
Country : Indonesia
athin posted @ 2020-04-11 6:58 PM
Puzzle 11:
If for example I only use 5 rows x 10 columns table, should I just put only the contents in row 1 to 5? And should I just put 10 characters in one row?
If for example I only use 5 rows x 10 columns table, should I just put only the contents in row 1 to 5? And should I just put 10 characters in one row?
@ 2020-04-11 7:13 PM (#27941 - in reply to #27868) (#27941) TopPosts: 136
Country : India
anurag posted @ 2020-04-11 7:13 PM
I can't imagine what the currently stated version of the Town puzzle asks us to do, if it is different from what I and many others are confident that it is.
@ 2020-04-11 7:47 PM (#27942 - in reply to #27868) (#27942) TopPosts: 67
Country : France
Puzlifouk posted @ 2020-04-11 7:47 PM
Puzzle 2: the answer format is quite strange. Why from right to left. And it is from right to left for the first diagonal too ? Or you mean from to bottom, for the two diagonals ?
@ 2020-04-11 7:49 PM (#27943 - in reply to #27942) (#27943) TopPosts: 67
Country : France
Puzlifouk posted @ 2020-04-11 7:49 PM
Oops, sorry. It's explained on the answering form ...
@ 2020-04-11 9:08 PM (#27944 - in reply to #27936) (#27944) TopPosts: 8
Country : Japan
SP1 posted @ 2020-04-11 9:08 PM
Riad Khanmagomedov - 2020-04-11 6:05 PM
Without the digit 2, the example does not have a unique solution.
panista - 2020-04-11 5:28 PM
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Without the digit 2, the example does not have a unique solution.
Oh... I maybe misunderstand the rules of "Town puzzle"...
My former interpretation is as follows:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules:
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
(<- the rules of "Clouds" + street rule)
Conditions for optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
However I read this reply and guess that the following interpretation is true:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
(<- exactly "Clouds" rules)
Restriction on the answer grid: (= NOT "Town puzzle" RULE!!! ONLY FOR OPTIMIZATION!!!)
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
Conditions of the optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
Which interpretation is correct? Or still misunderstanding? Please clarify!
@ 2020-04-11 9:20 PM (#27945 - in reply to #27944) (#27945) TopPosts: 136
Country : India
anurag posted @ 2020-04-11 9:20 PM
This has been asked several times, but not clarified yet. Looks like the reviewers did not care to check the optimizers. While I am sure it has to be the first version, the author himself has turned it around. The second version is trivial and makes no sense. If that is what is expected, I don't get it, and don't like the puzzle.
@ 2020-04-11 10:11 PM (#27946 - in reply to #27944) (#27946) TopPosts: 234
Country : Russia
Riad Khanmagomedov posted @ 2020-04-11 10:11 PM
SP1 - 2020-04-11 9:08 PM
Oh... I maybe misunderstand the rules of "Town puzzle"...
My former interpretation is as follows:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules:
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
(<- the rules of "Clouds" + street rule)
Conditions for optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
However I read this reply and guess that the following interpretation is true:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
(<- exactly "Clouds" rules)
Restriction on the answer grid: (= NOT "Town puzzle" RULE!!! ONLY FOR OPTIMIZATION!!!)
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
Conditions of the optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
Which interpretation is correct? Or still misunderstanding? Please clarify!
Riad Khanmagomedov - 2020-04-11 6:05 PM
Without the digit 2, the example does not have a unique solution.
panista - 2020-04-11 5:28 PM
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Without the digit 2, the example does not have a unique solution.
Oh... I maybe misunderstand the rules of "Town puzzle"...
My former interpretation is as follows:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules:
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
(<- the rules of "Clouds" + street rule)
Conditions for optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
However I read this reply and guess that the following interpretation is true:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
(<- exactly "Clouds" rules)
Restriction on the answer grid: (= NOT "Town puzzle" RULE!!! ONLY FOR OPTIMIZATION!!!)
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
Conditions of the optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
Which interpretation is correct? Or still misunderstanding? Please clarify!
I now understand where the questions came from. In the September Contest 2010, I published the Town puzzle. When solving this puzzle, we used the condition that the white area does not have 2x2 fragments. I repeated the name of the puzzle in 2020, but without looking back at the previous work. This point probably confused the solvers. In this April Contest, I suggest using the second option that you have described.
@ 2020-04-11 10:15 PM (#27947 - in reply to #27868) (#27947) TopPosts: 136
Country : India
anurag posted @ 2020-04-11 10:15 PM
As I said a couple of times today, the second version does not appeal to me. I reject it, unless someone can explain how it works. Also, I don't have my question about my subbmission answered yet. I think the admins are not available today to send you my submission.
@ 2020-04-11 10:40 PM (#27948 - in reply to #27946) (#27948) TopPosts: 8
Country : Japan
SP1 posted @ 2020-04-11 10:40 PM
Riad Khanmagomedov - 2020-04-11 10:11 PM
I now understand where the questions came from. In the September Contest 2010, I published the Town puzzle. When solving this puzzle, we used the condition that the white area does not have 2x2 fragments. I repeated the name of the puzzle in 2020, but without looking back at the previous work. This point probably confused the solvers. In this April Contest, I suggest using the second option that you have described.
SP1 - 2020-04-11 9:08 PM
Oh... I maybe misunderstand the rules of "Town puzzle"...
My former interpretation is as follows:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules:
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
(<- the rules of "Clouds" + street rule)
Conditions for optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
However I read this reply and guess that the following interpretation is true:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
(<- exactly "Clouds" rules)
Restriction on the answer grid: (= NOT "Town puzzle" RULE!!! ONLY FOR OPTIMIZATION!!!)
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
Conditions of the optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
Which interpretation is correct? Or still misunderstanding? Please clarify!
Riad Khanmagomedov - 2020-04-11 6:05 PM
Without the digit 2, the example does not have a unique solution.
panista - 2020-04-11 5:28 PM
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Puzzle 10: I have a question about the sentence "The white cells must form streets. The white area of the streets cannot contain fragments of 2x2 cells."
Is this the rule of a Town puzzle or the restriction on answers (in this case, a Town puzzle is the same as a so-called Clouds puzzle)?
For example, the mini-example without "2" is valid or invalid?
Without the digit 2, the example does not have a unique solution.
Oh... I maybe misunderstand the rules of "Town puzzle"...
My former interpretation is as follows:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules:
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
(<- the rules of "Clouds" + street rule)
Conditions for optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
However I read this reply and guess that the following interpretation is true:
Make a Town puzzle with a unique solution in the 12x10 grid.
"Town puzzle" rules
Place some dark rectangles, that are at least two cells wide and two cells high.
They can not touch each other, not even diagonally.
The numbers outside the grid show the number of dark cells in the corresponding row or column.
(<- exactly "Clouds" rules)
Restriction on the answer grid: (= NOT "Town puzzle" RULE!!! ONLY FOR OPTIMIZATION!!!)
The white cells must form streets - the any stretches with a width of one cell and length at least 2.
The white area cannot contain fragments of 2x2 cells.
Conditions of the optimization:
Maximize N, the number of streets.
If two solutions have the same N, then the solution with the smaller sum of the given numbers is considered better.
Which interpretation is correct? Or still misunderstanding? Please clarify!
I now understand where the questions came from. In the September Contest 2010, I published the Town puzzle. When solving this puzzle, we used the condition that the white area does not have 2x2 fragments. I repeated the name of the puzzle in 2020, but without looking back at the previous work. This point probably confused the solvers. In this April Contest, I suggest using the second option that you have described.
I see how it is. OK, now I consider this optimization by using the latter option. Thank you for your reply!
@ 2020-04-12 2:28 AM (#27949 - in reply to #27868) (#27949) TopPosts: 4
Country : Czech Republic
WTM posted @ 2020-04-12 2:28 AM
Puzzle 8: As I understand it, the sides along the entire grid don't need to be filled in, is that correct? Otherwise it would have no solutions, if I'm looking correctly. But still, even if they don't all have to be filled in, can at least some of them be filled in?
@ 2020-04-12 4:56 AM (#27950 - in reply to #27868) (#27950) TopPosts: 11
Country : Indonesia
athin posted @ 2020-04-12 4:56 AM
Oh well, I already had a nice construction for the first interpretation, now I have to update it (or maybe scrapped it).. Hope this kind of misunderstanding doesn't come in later contests.
To clarify again, the solution of the town puzzle may have 2x2 cells. But if it happens, then it will get absolute 0 points. Is this correct?
To clarify again, the solution of the town puzzle may have 2x2 cells. But if it happens, then it will get absolute 0 points. Is this correct?
@ 2020-04-12 6:44 AM (#27951 - in reply to #27868) (#27951) TopPosts: 74
Country : United States
mstang posted @ 2020-04-12 6:44 AM
Puzzle 9: Are Fillomino rules in effect, where polyominoes of the same size must not be orthogonally adjacent? Or can they be adjacent?
@ 2020-04-12 12:42 PM (#27953 - in reply to #27951) (#27953) TopPosts: 49
Country : France
Kithyane posted @ 2020-04-12 12:42 PM
mstang - 2020-04-12 2:44 AM
Puzzle 9: Are Fillomino rules in effect, where polyominoes of the same size must not be orthogonally adjacent? Or can they be adjacent?
Puzzle 9: Are Fillomino rules in effect, where polyominoes of the same size must not be orthogonally adjacent? Or can they be adjacent?
They can be adjacent.
@ 2020-04-12 12:47 PM (#27954 - in reply to #27951) (#27954) TopPosts: 136
Country : India
anurag posted @ 2020-04-12 12:47 PM
LOL.. sloppy work. I suspect the testers didn't have a look at the file.
@ 2020-04-12 12:49 PM (#27955 - in reply to #27950) (#27955) TopPosts: 136
Country : India
anurag posted @ 2020-04-12 12:49 PM
Yes, 2x2 areas are fine, but give no points. 1xN streets will earn you points. I suppose the admin has vowed not to reply to any of the questions, but to take down posts.
Edited by anurag 2020-04-12 12:50 PM
Edited by anurag 2020-04-12 12:50 PM
@ 2020-04-12 2:04 PM (#27956 - in reply to #27940) (#27956) TopPosts: 11
Country : Indonesia
athin posted @ 2020-04-12 2:04 PM
athin - 2020-04-11 6:58 PM
Puzzle 11:
If for example I only use 5 rows x 10 columns table, should I just put only the contents in row 1 to 5? And should I just put 10 characters in one row?
Puzzle 11:
If for example I only use 5 rows x 10 columns table, should I just put only the contents in row 1 to 5? And should I just put 10 characters in one row?
Sorry before, but this question hasn't replied yet. I'm afraid it's missed because of the puzzle 10 discussion. Thanks
@ 2020-04-12 2:07 PM (#27957 - in reply to #27908) (#27957) TopPosts: 23
Country : India
DanAvi posted @ 2020-04-12 2:07 PM
2 is the easiest solve, I guess, since even I have solved it
@ 2020-04-12 11:43 PM (#27958 - in reply to #27868) (#27958) TopPosts: 136
Country : India
anurag posted @ 2020-04-12 11:43 PM
Puzzle 11: If the solution has multiple occurences of a card, but only one that does not share borders with other cards, is it acceptable?
@ 2020-04-13 12:12 PM (#27959 - in reply to #27868) (#27959) TopPosts: 7
Country : South Korea
EoHeongMat posted @ 2020-04-13 12:12 PM
Puzzle 5:
1. In example, is there reason that [0,0] should be used?
2. Should "ALL" dominoes are placed? If so, why is there no [1,1]?
Edited by EoHeongMat 2020-04-13 12:13 PM
1. In example, is there reason that [0,0] should be used?
2. Should "ALL" dominoes are placed? If so, why is there no [1,1]?
Edited by EoHeongMat 2020-04-13 12:13 PM