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Location: India |
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Location: India |
Logic Masters India announces Forsmarts X th Anniversary Contest
Author : Vladimir Portugalov
Dates : 1 st - 3 rd December
IB and Submission Link : here
Note : Although classified as annual contest, this will be included in monthly ratings.
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Posts: 22
Location: ITALY | Hi, last puzzle is only a classic sudoku? Why a diagonal is marked? |
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Posts: 315
Location: The Netherlands | Akuma21 - 2012-11-24 1:23 AM
Hi, last puzzle is only a classic sudoku? Why a diagonal is marked?
The grey cells will contain the digit X from the puzzle 1-9. Row 1 contains the digit encoded by X in puzzle 1. Row 2 will contain the digit encoded by X in puzzle 2. Same goes with Rows 3-9 and Puzzles 3-9. So it's not a "marked" diagonal.
All digits X from the top puzzles go in the top Sudoku. All digits X from the bottom puzzles, go in the bottom Sudoku.
It's all explained in the instruction booklet.
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Posts: 315
Location: The Netherlands | One question:
Does each puzzle solve independently or is the X-clue influenced by digits it can't be because of the last Sudoku? |
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus | Para - 2012-11-24 1:44 AM
One question:
Does each puzzle solve independently or is the X-clue influenced by digits it can't be because of the last Sudoku?
You can try to use the possibilities for Xs from Sudoku, but it's not mandatory as all the puzzles 1-9 are solvable independently.
Edited by forsmarts 2012-11-24 3:46 AM
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1780
Location: India | I'll have to be extra careful in this one with the 3 separate answer keys. I think if rows/columns are rightly placed one can safely assume that the decryption has been done correctly, especially since the solver knows that part may be required later. |
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus | Prasanna,
"Cryptic sequence" is rarely more than 5 digits long, so you can treat it as the "feature" of this test, not taking much time and attention. But the rows/columns will surely need all your attention, I really don't want to take away any points in case of mistypes, but I'll have to. Also I'd like to remind everyone to pay double attention to which row/column you're describing, last year there were surprisingly lot of entrances of the wrong rows/columns.
Edited by forsmarts 2012-11-25 10:57 PM
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1780
Location: India | forsmarts - 2012-11-25 10:54 PM
Prasanna,
"Cryptic sequence" is rarely more than 5 digits long, so you can treat it as the "feature" of this test, not taking much time and attention. But the rows/columns will surely need all your attention, I really don't want to take away any points in case of mistypes, but I'll have to. Also I'd like to remind everyone to pay double attention to which row/column you're describing, last year there were surprisingly lot of entrances of the wrong rows/columns.
Sorry, just to confirm again. I think its a wrong way to interpret this if I feel you'll be lenient on the Cryptic Sequence aspect of the key, as long as the rows/columns part is correct? |
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus | I expect all the keys to be correct in order to get the points, as always. Whether I decide to satisfy the "claim points" appeal when the "cryptic sequence" is wrong - depends on each individual case, but I wouldn't count on it :) |
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Posts: 225
Location: Thailand | Is it a rule that the cryptic has to be numbers from 1-N?
Like All-Seeing Snake, number set is not consecutive.
But in Minesweepers, number set is consecutive from 1-N.
Also, can the cryptic be one of the givens?
In Thermometers, 1 is given and is not in the cryptic.
In Four Winds, 2 is given and is not in the cryptic.
Is this a coincidence or a rule?
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus |
Is it a rule that the cryptic has to be numbers from 1-N?
Like All-Seeing Snake, number set is not consecutive.
But in Minesweepers, number set is consecutive from 1-N.
Hidden numbers can be from a range 0-N, not necessary consecutive as can be seen from All-seeing Snake example.
Also, can the cryptic be one of the givens?
In Thermometers, 1 is given and is not in the cryptic.
In Four Winds, 2 is given and is not in the cryptic.
Is this a coincidence or a rule?
It is a coincidence, don't drop any possibilities based on the givens. |
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Sudoku Grand Prix - Italian Round Author
Posts: 21
Location: ITALY | A question about number 0.
In some puzzles (sudoku difference, futoshiki, all-seeing snake, abc-box, classic sudoku) it' obvious that a 0 cannot appear.
In other puzzles (slither link, minesweeper) it's possible and very probably it will be.
But in first seen coral, thermometers and four winds? Usually, it doesn't, but can you confirm all my interpretations?
Thanks
Alberto
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus | alberto - 2012-11-26 4:27 PM
A question about number 0.
In some puzzles (sudoku difference, futoshiki, all-seeing snake, abc-box, classic sudoku) it' obvious that a 0 cannot appear.
In other puzzles (slither link, minesweeper) it's possible and very probably it will be.
But in first seen coral, thermometers and four winds? Usually, it doesn't, but can you confirm all my interpretations?
I agree with your observations. In common: where it's natural for zero to appear among the givens - you should take this option into account. |
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Posts: 33
Location: Japan | I think this set will be as difficult as till last year...
BTW, in the example answer of Sudoku Difference, R3C2(5) is wrong. it must be 4. |
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forsmarts 13th Anniversary Contest Author
Posts: 33
Location: Belarus | Kota - 2012-11-27 5:51 PM
I think this set will be as difficult as till last year...
It won't be easy, you're right :) But I've tried to make it easier than last year.
BTW, in the example answer of Sudoku Difference, R3C2(5) is wrong. it must be 4.
Sorry for that mistype. |
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Posts: 48
Location: India | Is this competition available in online mode ??? |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1780
Location: India | sanket.saxena - 2012-11-29 11:11 PM
Is this competition available in online mode ???
There will be no online solving for this test. |
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Triplets & Triangles Author
Posts: 63
Location: United Kingdom | In the thermometers example puzzle, a 1 is given as an outside clue. Is it just coincidence that none of the letters stands for a 1? |
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Location: India | David McNeill - 2012-12-01 5:31 PM
In the thermometers example puzzle, a 1 is given as an outside clue. Is it just coincidence that none of the letters stands for a 1? Just a coincidence, as mentioned above in this thread. |
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Classics & Regions (PR 2016/17) Author
Posts: 170
Location: Germany | So... I had a lot of trouble finding a logical approach to many of the puzzles on this test, and am a little unsure whether I just failed there, or whether trial and error is how you're meant to go. Particularly since some puzzles (the Futoshiki and ABC-Box puzzles, say) had a nice solution path.
Thanks for making the test regardless. |
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Posts: 35
Location: United States | Out of curiosity, what changed in the puzzle booklet? It looks like a new one was uploaded while I was working on the puzzles. (Did better than I expected; from the IB, this was pretty intimidating, and most of the puzzles were just as confounding as I expected.) |
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Location: India | Slitherlink top had multiple solutions (because of which Classic Sudoku top also had multiple solutions). This was fixed in the puzzle booklet.
Players who had started before the fixed booklet uploaded will get points for submitting any of the correct solutions.
(I thought I posted this in forum, but it looks like I just typed it, and may be closed my browser.) |
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Posts: 35
Location: United States | Hah. Maybe that explains why it seemed unusually easy for me. :) |
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Posts: 29
Location: Canada | can the letters be 0? |
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Forsmarts 10th Anniversary Contest — 1st-3rd December
