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Posts: 1800 ![]() ![]() ![]() ![]() ![]() Country : India | prasanna16391 posted @ 2013-06-26 8:42 PM inventor - 2013-06-26 7:07 PM Polygraph: How to solve these type of problem? What should be the first step of approach solve the probem? Please help. The easiest way to start the competition puzzle of 2009 is to use the 0. Think of it this way - Every cell has a total of 4 lines that can be around it. But no clue can have all 4 lines around it used, because that'll form a little square loop away from the main loop. So, a 0 has to be the number of lines used, rather than unused, because if 0 lines are unused, that means 4 lines are used. Therefore, all 0s have to be inside the loop and have no lines around them. Since the 0 is inside the loop, there needs to be some part of the loop "binding" it on all sides. so, you have a line in the last row, under the 0. This means, the 3 is "bound" as well and is also inside the loop, and there's your start, and you can now also prove that the two 1s are outside the loop and this means that 3 sides of theirs are used by the loop. (Polygraph.png) Attachments ---------------- ![]() |
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Posts: 8 Country : India | inventor posted @ 2013-06-26 10:11 PM thank you very much prasanna for your valuable reply. :) |
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Posts: 1 | nik posted @ 2013-06-30 1:24 PM hey tel m details dude |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-06-30 1:54 PM IPC2013 - Puzzle types published.Puzzle types are now published at http://logicmastersindia.com/2013/IPC/. |
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Posts: 241 ![]() ![]() ![]() ![]() Country : Indonesia | chaotic_iak posted @ 2013-06-30 2:19 PM By "IPC will be open for a longer period for international players to participate at their own convenience." (IB), what or how long exactly is the period? Can we assume that it's at least 24 hours? EDIT: More questions as I'm reading the IB: In F1-F2, can we assume the circle marked A is aligned to some edge of the grid? (This makes seeing which way is clockwise to become easier. Related post.) In H2, can we assume that we're told which squares are blank? (Just in case the grid is actually a cross or some other thing that is not a rectangle; if we're not told so, the spaces outside the grid can be either a blank square that is supposed to be filled or simply not part of the grid. Currently, the example in the IB has an outlined grid, so the part inside the grid is visible.) Edited by chaotic_iak 2013-06-30 2:30 PM |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-06-30 2:56 PM chaotic_iak - 2013-06-30 2:19 PM For International participation, IPC will be open for 48 hours. When flash submissionis enabled - in a few days from now, local times will be displayed. By "IPC will be open for a longer period for international players to participate at their own convenience." (IB), what or how long exactly is the period? Can we assume that it's at least 24 hours? chaotic_iak - 2013-06-30 2:19 PM "A" will always be the first (top-left-most) black circle. Letters will be marked only on black circle. In F1-F2, can we assume the circle marked A is aligned to some edge of the grid? (This makes seeing which way is clockwise to become easier. Related post.) However, full points will be awarded if you start from any given letter, and go clock wise / anti clock wise - as long as you enter all letters you should be safe. chaotic_iak - 2013-06-30 2:19 PM Just like the IB, the final puzzle will be a square with borders. In H2, can we assume that we're told which squares are blank? (Just in case the grid is actually a cross or some other thing that is not a rectangle; if we're not told so, the spaces outside the grid can be either a blank square that is supposed to be filled or simply not part of the grid. Currently, the example in the IB has an outlined grid, so the part inside the grid is visible.) |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-07-01 10:36 AM One note about answer key of Battleships : Answer Key: For each row from top to bottom, enter the column position of left most ship segment. Enter X if no ships. The word "segment" was missing from the IB. |
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Posts: 1800 ![]() ![]() ![]() ![]() ![]() Country : India | prasanna16391 posted @ 2013-07-01 5:47 PM 1. If I understand it right, the A1 questions will be different versions of the ones given in the Instructions booklet, but A2 will be unknown types? 2. Will the Skyscraper Sudoku be a 9x9 or something smaller? |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-07-01 6:05 PM prasanna16391 - 2013-07-01 5:47 PM Yes. 1. If I understand it right, the A1 questions will be different versions of the ones given in the Instructions booklet? prasanna16391 - 2013-07-01 5:47 PM Smaller. 2. Will the Skyscraper Sudoku be a 9x9 or something smaller? |
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Posts: 1800 ![]() ![]() ![]() ![]() ![]() Country : India | prasanna16391 posted @ 2013-07-03 2:43 PM IPC Practice Puzzles, Solving Tips, and Links : http://prasannaseshadri.wordpress.com/2013/07/03/ipc-preview-practi... |
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Posts: 1 Country : India | harshitasaxena1600 posted @ 2013-07-03 5:25 PM does the puzzle quiz contests includes all the various kinds of puzzles? is there any quiz for only sudoku puzzles?? |
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Posts: 1800 ![]() ![]() ![]() ![]() ![]() Country : India | prasanna16391 posted @ 2013-07-03 6:45 PM harshitasaxena1600 - 2013-07-03 5:25 PM does the puzzle quiz contests includes all the various kinds of puzzles? is there any quiz for only sudoku puzzles?? There are annual Championships for Puzzles and Sudoku separately. This year, the Sudoku Championship hasn't been announced yet, but that shouldn't stop you from participating in the Puzzle Championship :) |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-07-03 7:30 PM Happy Dots - RulesThere is change in Happy Dots rules. Like Corridors, no 2X2 area can belong to same region. Modified IB uploaded. ![]() |
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Posts: 33 ![]() Country : India | puneet87 posted @ 2013-07-04 1:51 PM In H2, is it possible for a word to occur more than once in the grid? |
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Posts: 33 ![]() Country : India | puneet87 posted @ 2013-07-04 2:16 PM Where can i get some practice puzzles for crosslink(M2) |
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Posts: 123 ![]() ![]() Country : India | macherlakumar posted @ 2013-07-04 2:48 PM puneet87 - 2013-07-04 2:16 PM http://mellowmelon.wordpress.com/category/puzzle-types/slitherlink/...Where can i get some practice puzzles for crosslink(M2) Regards, Ravi |
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Posts: 542 ![]() ![]() ![]() Country : India | rajeshk posted @ 2013-07-04 4:15 PM For Pentomino Kakuro: Is there any possibility of 6 becoming 9 or 9 becoming 6 during rotation? |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-07-04 4:24 PM rajeshk - 2013-07-04 4:15 PM No. 6 Remains 6 and 9 remains 9. Only the pieces are rotated, the number (digits) do not change.For Pentomino Kakuro: Is there any possibility of 6 becoming 9 or 9 becoming 6 during rotation? |
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Posts: 668 ![]() ![]() ![]() ![]() ![]() Country : India | swaroop2011 posted @ 2013-07-04 5:35 PM puneet87 - 2013-07-04 1:51 PM In H2, is it possible for a word to occur more than once in the grid? No. Each word will appear only once :) |
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Posts: 14 Country : India | suryadevi posted @ 2013-07-05 12:33 PM i want to know how to play IPC give me reply |
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![]() ![]() ![]() ![]() ![]() Country : India | Administrator posted @ 2013-07-05 12:58 PM prasanna16391 - 2013-07-01 5:47 PM It will be 6X6.2. Will the Skyscraper Sudoku be a 9x9 or something smaller? |
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Posts: 123 ![]() ![]() Country : India | macherlakumar posted @ 2013-07-05 1:08 PM suryadevi - 2013-07-05 12:33 PM i want to know how to play IPC give me reply Hi, I recommend you to go through this link for IPC http://logicmastersindia.com/2013/IPC/ After this if you have any specific questions you can post. Regards, Ravi |
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Posts: 48 ![]() ![]() Country : India | sanket.saxena posted @ 2013-07-05 7:35 PM I solved the Regional Star Battle given in practice pdf by my own and get the differ solution .. .. just check this link. Is it right ?? https://www.dropbox.com/s/nhgkjhszcxnjwxf/20130705_192803_2.jpg |
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Posts: 48 ![]() ![]() Country : India | sanket.saxena posted @ 2013-07-05 7:43 PM sorry ... i did a mistake in that solution |
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Posts: 164 ![]() ![]() ![]() ![]() Country : Slovakia | greenhorn posted @ 2013-07-05 7:45 PM sanket.saxena - 2013-07-05 7:35 PM I solved the Regional Star Battle given in practice pdf by my own and get the differ solution .. .. just check this link. Is it right ?? https://www.dropbox.com/s/nhgkjhszcxnjwxf/20130705_192803_2.jpg You have two stars touching diagonally - R2C4 and R3C5 |