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Posts: 33 ![]() Country : Turkey | A Carton Mutant posted @ 2011-05-10 12:06 AM Shapes need to contain at least one part of the snake. I thought it was implied by the rules, but it seems I was being vague. | |||||||||
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Posts: 17 Country : United Kingdom | Gareth posted @ 2011-05-10 2:44 AM Doesn't the Ambigram Skyscrapers example have two solutions? Won't 0123,3210,1302,2031 also suffice or am I missing a rule? | |||||||||
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Posts: 33 ![]() Country : Turkey | A Carton Mutant posted @ 2011-05-10 3:31 AM That won't satisfy the "looking the same when turned upside down" part. | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-10 7:05 AM MellowMelon - 2011-05-09 11:36 PM Is the Kropki example not uniquely solvable? It seems that you can swap 1s with 5s and 2s with 4s to get a different answer. A Carton Mutant - 2011-05-10 12:06 AM Shapes need to contain at least one part of the snake. I thought it was implied by the rules, but it seems I was being vague. IB with these 2 changes uploaded. | |||||||||
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Posts: 31 ![]() Country : United Kingdom | PuzzleScot posted @ 2011-05-10 3:52 PM Do you have the exact UTC time window for this contest? If it has not been set, could it the end time be at least 1am GMT/UTC (2am BST) please, to enable as many UK competitors as possible to compete? Thank-you. | |||||||||
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![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Country : India | debmohanty posted @ 2011-05-10 4:01 PM PuzzleScot - 2011-05-10 3:52 PM Do you have the exact UTC time window for this contest? If it has not been set, could it the end time be at least 1am GMT/UTC (2am BST) please, to enable as many UK competitors as possible to compete? Thank-you. This will start at 00:00:01 AM Saturday GMT (same as all LMI tests). But we are making a change to the end time based on several complaints / suggestions. The test will be open for 48 hours, that means players can start upto 48 hours. Once a player starts, he will always have 101 minutes to submit (so in effect it will end at 01:41:01 AM GMT) Hope it is fine. If you want a longer window, we can start earlier or end later or both. Let us know. | |||||||||
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Posts: 63 ![]() ![]() ![]() Country : United Kingdom | David McNeill posted @ 2011-05-10 6:28 PM Further to Gareth's query, I believe that the Ambigram Skyscrapers puzzle has 3 solutions. The third solution is 0123,3210,1032,2301. The Persistence of Memory solution puzzled me and I think the rules need to be clarified. I assumed that the orientation of the shape did not matter and that, therefore, all 4 shapes were identical. Under this interpretation, the given solution does not satisfy the rule that each shape should have snake parts with the same appearance. There is at least one valid solution using my "false" interpretation. Please clarify these points. | |||||||||
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![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Country : India | debmohanty posted @ 2011-05-10 6:45 PM About Ambigram Skyscrapers The rule says "The solution, if written in the above notation, must look the same when the page is turned upside down." This is Gareth's alternate solution (with page turned upside down)
David's alternate solution (with page turned upside down)
Both of them don't satisfy the rule. The given solution is
and it looks same when rotated. | |||||||||
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Posts: 774 ![]() ![]() ![]() ![]() ![]() ![]() Country : India | rakesh_rai posted @ 2011-05-10 6:48 PM David McNeill - 2011-05-10 6:28 PM Here, 2x1 block is different from 1x2 block.The Persistence of Memory solution puzzled me and I think the rules need to be clarified. I assumed that the orientation of the shape did not matter and that, therefore, all 4 shapes were identical. Under this interpretation, the given solution does not satisfy the rule that each shape should have snake parts with the same appearance. There is at least one valid solution using my "false" interpretation. | |||||||||
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![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Country : India | debmohanty posted @ 2011-05-10 7:04 PM Apart from 2X1 blocks being different from 1X2 blocks, the path of the snake also must be exactly same (rotation not allowed) If some 1X1 blocks were given :
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Posts: 33 ![]() Country : Turkey | A Carton Mutant posted @ 2011-05-10 7:22 PM The reason I created the example with 1x2 blocks and 2x1 blocks was the hope that them being different would be noticed. Guess not. If two blocks have exactly the same shape (no rotation, no nothing), they have the same appearance regarding snake parts. Ambigram: I do not expect anyone to actually solve the puzzle using that fancy font. :) However, the rule "The solution, if written in the above notation, must look the same when the page is turned upside down." helps. | |||||||||
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Posts: 668 ![]() ![]() ![]() ![]() ![]() Country : India | swaroop2011 posted @ 2011-05-10 8:47 PM hey in the Deformable Kropki i think there are 2 solutions. the 3's and 5's are interchangeable at R4C1 R4C2 AND R5C1 R5C2. | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-10 9:07 PM swaroop2011 - 2011-05-10 8:47 PM R3C1 is 2 and R4C1 will be 3. That is not valid since there is no dot between R3C1 and R4C1.hey in the Deformable Kropki i think there are 2 solutions. the 3's and 5's are interchangeable at R4C1 R4C2 AND R5C1 R5C2. | |||||||||
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Posts: 668 ![]() ![]() ![]() ![]() ![]() Country : India | swaroop2011 posted @ 2011-05-10 9:13 PM ok it means that reverse rule also applies in Deformable Kropki. Edited by swaroop2011 2011-05-10 9:24 PM | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-10 9:14 PM swaroop2011 - 2011-05-10 9:13 PM That is so obvious from the rules.ok it means that reverse rule also applies. | |||||||||
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Posts: 668 ![]() ![]() ![]() ![]() ![]() Country : India | swaroop2011 posted @ 2011-05-10 9:25 PM In Coral rotator , does whil rotating the page upside down makes 2 and interchangeable. And in Symmetric Loop in the first regiion that is in column 1 and 2. the loop is U shape but at R3 it is Z shape BUt the rule says it is symmetric how? | |||||||||
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Posts: 63 ![]() ![]() ![]() Country : United Kingdom | David McNeill posted @ 2011-05-10 9:46 PM Thanks for clarification. I hope my mistakes will not be made by any competitors in the real thing. | |||||||||
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Posts: 774 ![]() ![]() ![]() ![]() ![]() ![]() Country : India | rakesh_rai posted @ 2011-05-10 10:11 PM swaroop2011 - 2011-05-10 9:25 PM Yes 2 becomes 3 on page turned upside down, and vice-versaIn Coral rotator , does whil rotating the page upside down makes 2 and interchangeable. And in Symmetric Loop Just look at the portion of the loop inside the marked areas. It should be symmetric, i.e., if you rotate the marked area by 180 degrees, you still get the same loop portion inside the area.in the first regiion that is in column 1 and 2. the loop is U shape but at R3 it is Z shape BUt the rule says it is symmetric how? | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-11 5:46 AM rakesh_rai - 2011-05-10 10:11 PM swaroop2011 - 2011-05-10 9:25 PM Yes 2 becomes 3 on page turned upside down, and vice-versaIn Coral rotator , does whil rotating the page upside down makes 2 and interchangeable. Also, 4 becomes 7 and vice versa. Same with 6 and 9. Remaining digits 0 1 5 8 don't change when turned upside down. | |||||||||
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Posts: 739 ![]() ![]() ![]() ![]() Country : India | vopani posted @ 2011-05-11 9:52 PM In Superimposed Loop, can both the grids contain a black cell in the same position? | |||||||||
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Posts: 33 ![]() Country : Turkey | A Carton Mutant posted @ 2011-05-12 1:07 AM Indeed. Just their superimposed form is given, the two grids are actually independent. They do not put any constraints on each other. | |||||||||
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Posts: 33 ![]() Country : Turkey | A Carton Mutant posted @ 2011-05-13 12:39 AM Small clarification: Sorry for making the diagram borders bold on the Symmetric Loop example, it led to some confusion with the actual regions. Contest puzzles do not have them bolded. | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-13 9:44 PM Puzzle Booklet uploaded. It has 11 pages, each page has puzzles (no cover page) | |||||||||
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2011-05-13 9:44 PM Starting this test, we are making one change If somebody doesn't want to include this test's results in LMI Ratings, they must unselect the checkbox. ![]() After clicking on "Start", the checkbox will be invisible. | |||||||||
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Posts: 460 ![]() ![]() ![]() ![]() ![]() ![]() ![]() Country : India | purifire posted @ 2011-05-13 10:05 PM Administrator - 2011-05-13 9:44 PM Starting this test, we are making one change If somebody doesn't want to include this test's results in LMI Ratings, they must unselect the checkbox. ![]() After clicking on "Start", the checkbox will be invisible. To add to what the Admin said, if a player does not uncheck the box then irrespective of whether they submit the answers or not, their scores will be taken into consideration for the ranking and that can affect their standings too. Rishi |