|
|
Para
Posts: 315
Country : The Netherlands | Para posted @ 2013-04-07 5:58 AM kishy72 - 2013-04-06 11:12 PM
In Borderless minesweeper there are 4 ways by which a 13 * 13 area can be formed .Which orientation needs to be considered? Also in the example puzzle of the same there is one unaccounted mine which is not part of any clue.How did it come into the picture?
Part of the puzzle is to figure out how it has to go.
The total of mines is given. It's the only place the 4th mine can go. |
|
kishy72
Posts: 419
Country : India | kishy72 posted @ 2013-04-11 6:24 AM In simple loop what does Lengths of two neighboring segments must differ by exactly 1 imply?What are neighbouring segments .Can someone explain how this happens in the example puzzle of the same?For persons who might be misguided in their solve by my earlier comment of 4 orientations ,I (might be) wrong on that . :-p |
|
FoxFireX
Posts: 35
Country : United States | Couple of questions on the optimizers.
For Domino Castle, the answer page notes that "some rows may not be used". Does that mean that if we build the castle into, say, a 12x12 grid, the empty rows/columns don't count against us as the minimum row/column value?
For Tetrasudoku, it's not explicitly stated, but I assume I know the answer: Must the sudoku be solvable at all? That is, is it acceptable to create a puzzle which has no solution, making the value of K=0? (I can't imagine that's okay, but figured I'd bring up the possibility anyway.) |
|
FoxFireX
Posts: 35
Country : United States | kishy72 - 2013-04-10 7:24 PM
In simple loop what does Lengths of two neighboring segments must differ by exactly 1 imply?What are neighbouring segments .Can someone explain how this happens in the example puzzle of the same?For persons who might be misguided in their solve by my earlier comment of 4 orientations ,I (might be) wrong on that . :-p
My reading of it is, you're drawing a single loop that passes through each dot. If you count the length of the line from dot to dot, then that length must go up or down by one from one segment to another as you travel the loop. In the example, if we start with the segment in the upper left of the grid and go clockwise, we start with a segment that's 2 units long. The next is 3 units long, then 2, 1, 2, 1, 2, 1, 2, 3, 2, 3, 2, 3, 4, 3, and back to the original 2 unit segment. |
|
Administrator
  
Country : India | FoxFireX - 2013-04-11 6:24 AM
Couple of questions on the optimizers.
For Domino Castle, the answer page notes that "some rows may not be used". Does that mean that if we build the castle into, say, a 12x12 grid, the empty rows/columns don't count against us as the minimum row/column value?
For Tetrasudoku, it's not explicitly stated, but I assume I know the answer: Must the sudoku be solvable at all? That is, is it acceptable to create a puzzle which has no solution, making the value of K=0? (I can't imagine that's okay, but figured I'd bring up the possibility anyway.)
Domino Castle : As you see from the example, only 4 rows are used. So it is not necessary to use all the rows.
Tetrasudoku : K > 0. Riad answered this earlier in this thread. |
|
swaroop2011
Posts: 668
Country : India | Just to confirm,
In Domino Castle we have to use all dominoes
i.e 1-1,1-2...1-7. ......7-7 so in all "49" dominoes right ?
or is it 1-1,1-2...1-7 then 2-2,2-3..2-7, 3-3.. so in that way 28 dominoes ??
Edited by swaroop2011 2013-04-11 3:06 PM
|
|
Ours brun
Posts: 148
Country : France | The standard set is made of 28 different dominoes; I am quite sure that's what we are supposed to use here (like in most domino-based logic puzzles). |
|
swaroop2011
Posts: 668
Country : India | Ours brun - 2013-04-11 4:57 PM
The standard set is made of 28 different dominoes; I am quite sure that's what we are supposed to use here (like in most domino-based logic puzzles).
ohk got it thank you : ) |
|
swaroop2011
Posts: 668
Country : India | In domino Castle,
1) Is it possible to have a 2*2 domino (that is placing two dominoes adjacently) or 3*3 as there is no such restriction mentioned in rules ?
2) can castle walls touch each other at corners again nothing mentioned regarding this in rules ??
Edited by swaroop2011 2013-04-12 2:56 PM
|
|
Riad Khanmagomedov
Posts: 234
Country : Russia | swaroop2011 - 2013-04-12 2:45 PM
In domino Castle,
1) Is it possible to have a 2*2 domino (that is placing two dominoes adjacently) or 3*3 as there is no such restriction mentioned in rules ?
2) can castle walls touch each other at corners again nothing mentioned regarding this in rules ??
You have 28 dominoes. Using all dominoes build a castle. Castle is connected freeform figure. |
|
kiwijam
Posts: 187
Country : New Zealand | kiwijam posted @ 2013-04-12 4:11 PM
1) Is it possible to have a 2*2 domino (that is placing two dominoes adjacently)
You can only place two dominoes adjacent (e.g. one above the other ) if both left ends match, and both right ends match. You have a set of 28 different dominoes to use, once each...
You have to follow the given rules, but if the rules don't restrict something, then you can do it. |
|
Administrator
Country : India | About Domino Castle : Please note that no domino can be used twice. (So each domino has to be used exactly once.)
We can see that in some submissions, a single domino (e.g. 3,4) is used twice. This is not allowed. Those submissions are invalid, and will not be considered.
|
|
Administrator
Country : India | Yet another note about Domino Castle : The task is to minimize the expresses (R-r)^2+(C-c)^2
Not to maximize it. We see a case, where the player has (probably) tried to maximize it.
|
|
Para
Posts: 315
Country : The Netherlands | Para posted @ 2013-04-12 10:50 PM I assume our optimised score gets adjusted if the solution is correct but our calculation of the score is wrong? |
|
Administrator
Country : India | Para - 2013-04-12 10:50 PM
I assume our optimised score gets adjusted if the solution is correct but our calculation of the score is wrong? Yes. The entered values of expressions help us in sorting the submissions, thats it. But if it is wrong, it will be adjusted. |
|
Administrator
Country : India | April Contest is now over. Submissions are not accepted any more.
Results will be out when Optimizers are checked manually. |
|
Para
Posts: 315
Country : The Netherlands | Para posted @ 2013-04-14 1:53 AM Is it okay to post our optimiser results here before the checking? |
|
PuzzleScot
Posts: 31
Country : United Kingdom | Thanks Riad for a lovely set of puzzles.
Nearly all were "How can it be possible to logically solve THIS puzzle?" followed some time later by "AH! How clever..."
Very impressed.
Thank-you again. |
|
Administrator
Country : India | Para - 2013-04-14 1:53 AM
Is it okay to post our optimiser results here before the checking? Yes.
A total of 28 submitted Tetra Sudoku (+ 1 invalid ). All submissions can be found in this pdf.
Riad has not double checked them yet, but if you notice any error or omissions, please bring it up. |
|
FoxFireX
Posts: 35
Country : United States | Huh. Looking at the submissions, I now realize that I completely missed the "or some of them" part of the instructions. Oh well; doubt I could have done much better anyway. :) |
|
greenhorn
Posts: 164
Country : Slovakia | Wow, I am wondering if a human should made up such a great sudoku with only 20 givens. Now I am ashamed of myself of being so naive.
Looking forward to rest of the results.
I must not forget to express my admiration to Riad and his great puzzles. Most of them were really hard and adroit. I should finnish all of them much faster, but forget to think about all the rules at all. I ignore number 0 in arrows and clouds and it costs me a lot of effort till I realized it. |
|
Administrator
Country : India | Domino Castle Submissions pdf - Only the horizontal dominos marked, remaining are vertical.
Correctness of rules not checked (e.g. the one in page 11 is definitely invalid ). If you notice any other grids missing rules, please post here.
22 submissions (out of which at least one is invalid ) |
|
Para
Posts: 315
Country : The Netherlands | Para posted @ 2013-04-14 2:57 AM FoxFireX - 2013-04-14 2:22 AM
Huh. Looking at the submissions, I now realize that I completely missed the "or some of them" part of the instructions. Oh well; doubt I could have done much better anyway. :)
I had the same problem. |
|
forcolin
Posts: 172
Country : ITALY | One of the best contests ever. Congratulations for a fantastic set of puzzles. Spasiba Riad |
|
Administrator
Country : India | Optimal Digital Ornament had most number of submissions.
The pdf is little tough to decrypt, but it is easy for those who have submitted the puzzle.
Riad probably has to spend lot of time checking this manually, so if you notice any errors / missing rules, please share. |
@ 2013-04-07 5:58 AM (#10561 - in reply to #10560) (#10561) Top