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Administrator
   
Country : India | Logic Masters India announces May Sudoku Test — Something is Missing
Author : Jakub Hrazdira (Gotroch )
Date : 28th and 29th May
Length : 100 minutes
IB and Submission Link : here
Theme : In each of these mostly standard Sudoku variants, some important clue or information will be missing. |
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Minfang Lin
Posts: 40
Country : China | |
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swaroop2011
Posts: 668
Country : India | NONCONSECUTIVE
i think the question is wrong.
as well as the solution given is different from question.
in question at r5c4 it is 3 but in solution it is 1.
Number X Is Alive
i didnt understood the rules.
can u be little bit more clear.
i mean which cages have same number.
in solution some have 6 whereas some have 16. |
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debmohanty
Country : India | Number X Is Alive : The sum of digits in all cases "end" with same digit. So it is just the unit digit which is same
6 16 26
or
11 21 so on
This unknown unit digit is known as X |
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Administrator
Country : India | LMI flash interface is not well equipped for solving some of the Sudokus in this round, especially Draw A Jigsaw, Toroidal, Hidden Sum Blackout, and to some extent Incomplete Sums
We are discussing how we can tackle this situation. An announcement in this respect is due. |
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swaroop2011
Posts: 668
Country : India | debmohanty - 2011-05-22 10:39 AM
Number X Is Alive : The sum of digits in all cases "end" with same digit. So it is just the unit digit which is same
6 16 26
or
11 21 so on
This unknown unit digit is known as X
thank you and what about nonconsecutive |
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swaroop2011
Posts: 668
Country : India | hey
Hidden SUm Blackout is also having a wrong solution
in question at r5c3 it is 3 and r3c3 it is 4
but it solution it is given as 6 and 3 respectively .
please do check it out.. |
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Administrator
Country : India | swaroop2011 - 2011-05-22 11:12 AM
thank you and what about nonconsecutive
swaroop2011 - 2011-05-22 11:47 AM
hey
Hidden SUm Blackout is also having a wrong solution
in question at r5c3 it is 3 and r3c3 it is 4
but it solution it is given as 6 and 3 respectively .
please do check it out..
we'll update the IB |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2011-05-22 2:54 PM Administrator - 2011-05-22 1:09 PM
swaroop2011 - 2011-05-22 11:12 AM
thank you and what about nonconsecutive
swaroop2011 - 2011-05-22 11:47 AM
hey
Hidden SUm Blackout is also having a wrong solution
in question at r5c3 it is 3 and r3c3 it is 4
but it solution it is given as 6 and 3 respectively .
please do check it out..
we'll update the IB
Swaroop2011 - Thanks for finding mistakes, corrected version of the IB was uploaded. Edited by Gotroch 2011-05-22 3:13 PM
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rakesh_rai
Posts: 774
Country : India | For Incomplete Sums, is it necessary that all the missing numbers (the red ones in the example) be different? |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2011-05-22 6:35 PM rakesh_rai - 2011-05-22 6:28 PM
For Incomplete Sums, is it necessary that all the missing numbers (the red ones in the example) be different?
No, it is only coincidence. |
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swaroop2011
Posts: 668
Country : India | can anybody help me out with how to get start in TOROIDAL.
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2011-05-22 10:16 PM swaroop2011 - 2011-05-22 9:46 PM
can anybody help me out with how to get start in TOROIDAL.
There are only 9 possible ways how to arrange the lines to form sudoku with 3x3 boxes.
You can easily eliminate 8 of them if you imagine the lines in your mind. (usually because two same digits appear in one box ) |
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Administrator
Country : India | Administrator - 2011-05-22 10:52 AM
LMI flash interface is not well equipped for solving some of the Sudokus in this round, especially Draw A Jigsaw, Toroidal, Hidden Sum Blackout, and to some extent Incomplete Sums
We are discussing how we can tackle this situation. An announcement in this respect is due.
We tried to enhance the flash interface for solving, but online solving experience was not much better (especially for Draw A Jigsaw / Toroidal / Hidden Sum Blackout )
So we decided that there won't be any flash interface for solving for this test. |
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beat
Posts: 5
Country : Poland | beat posted @ 2011-05-24 5:23 PM !!! Incomplete sums can have multiple solutions e.g.
413+25+6
536+14+2
245+63+1
152+46+3
361+52+4
624+31+5
AM I right? or I'm missing something? |
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Fred76
Posts: 337
Country : Switzerland | Fred76 posted @ 2011-05-24 5:46 PM beat - 2011-05-24 5:23 PM
!!! Incomplete sums can have multiple solutions e.g.
413+25+6
536+14+2
245+63+1
152+46+3
361+52+4
624+31+5
AM I right? or I'm missing something?
Beat,
On this puzzle we don't see very well the 2x3 box, but they exist  . Your solution doesn't respect standard sudoku rules (concerning these 2x3 box ).
Fred |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2011-05-24 5:47 PM beat - 2011-05-24 5:23 PM
!!! Incomplete sums can have multiple solutions e.g.
413+25+6
536+14+2
245+63+1
152+46+3
361+52+4
624+31+5
AM I right? or I'm missing something?
In your solution, you have repeated digits in 2x3 boxes. |
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Fred76
Posts: 337
Country : Switzerland | Fred76 posted @ 2011-05-24 5:55 PM beat - 2011-05-24 5:23 PM
I'm missing something?
Yes, but you're perfectly within the theme of this contest  |
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purifire
Posts: 460
Country : India | Hi Gotroch, I had a few Questions...
Torroidal
Do the shapes have to be rectangular boxes or they can also be jigsaw shaped??
Draw a Jigsaw.
When we draw the shapes is it a must that an incomplete line has to be only an extension of the given part or we can start drawing a shape from any point even from the middle of a given segment??
Which digit is missing?
In this puzzle I see a T-shaped green line, is that supposed to be treated as one single green line where the sum of all digits is the common sum, or do we treat them as 2 different lines with one digit common?
Rishi |
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Gotroch
Posts: 83
Country : Czech Republic | Gotroch posted @ 2011-05-26 8:58 PM purifire - 2011-05-26 4:04 PM
Torroidal
Do the shapes have to be rectangular boxes or they can also be jigsaw shaped??
All shapes have to be 3x3 rectangular boxes. But as it is toroidal puzzle, these 3x3 boxes can wrap around edges.
As I wrote before you have only 9 possible ways how to arrange straight lines. (Theoretically you can arrange them in such way, that you create classic sudoku )
purifire - 2011-05-26 4:04 PM
Draw a Jigsaw.
When we draw the shapes is it a must that an incomplete line has to be only an extension of the given part or we can start drawing a shape from any point even from the middle of a given segment??
You can draw bold lines anywhere you want, but you have to satisfy the rule that if you have two neighbouring cells, divided by bold line ---> these two cells have to be in two different regions.
purifire - 2011-05-26 4:04 PM
Which digit is missing?
In this puzzle I see a T-shaped green line, is that supposed to be treated as one single green line where the sum of all digits is the common sum, or do we treat them as 2 different lines with one digit common?
For that T-shaped green line: Four cells are connected together - so common sum (X ) will be the sum of these 4 digits (1+6+3+0=10 ) |
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purifire
Posts: 460
Country : India | Gotroch - 2011-05-26 8:58 PM
purifire - 2011-05-26 4:04 PM
Torroidal
Do the shapes have to be rectangular boxes or they can also be jigsaw shaped??
All shapes have to be 3x3 rectangular boxes. But as it is toroidal puzzle, these 3x3 boxes can wrap around edges.
As I wrote before you have only 9 possible ways how to arrange straight lines. (Theoretically you can arrange them in such way, that you create classic sudoku )
purifire - 2011-05-26 4:04 PM
Draw a Jigsaw.
When we draw the shapes is it a must that an incomplete line has to be only an extension of the given part or we can start drawing a shape from any point even from the middle of a given segment??
You can draw bold lines anywhere you want, but you have to satisfy the rule that if you have two neighbouring cells, divided by bold line ---> these two cells have to be in two different regions.
purifire - 2011-05-26 4:04 PM
Which digit is missing?
In this puzzle I see a T-shaped green line, is that supposed to be treated as one single green line where the sum of all digits is the common sum, or do we treat them as 2 different lines with one digit common?
For that T-shaped green line: Four cells are connected together - so common sum (X ) will be the sum of these 4 digits (1+6+3+0=10 )
Thanks Gotroch... lovely set of puzzles... cant wait for the weekend : ) |
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Administrator
Country : India | Puzzle Booklet uploaded. It has 8 pages, including a cover page.
As announced earlier, there will not be any online solving mechanism in this test. |
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swaroop2011
Posts: 668
Country : India | hey urgent help i started the test now
but in kropki there is no dots visible in puzzle booklet.
plz help my time running out |
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debmohanty
Country : India | We have double checked all images and there is no problem in the image. |
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swaroop2011
Posts: 668
Country : India | i dont know then what the problem, idownloaded again but there are no white or black dots visible |
@ 2011-05-22 9:10 AM (#4471 - in reply to #4468) (#4471) Top