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Posts: 16
Location: Hungary | Hi everyone,
I have a question about puzzle 16 Movable digits. The puzzle rule says (I'm sure I misunderstand it...):
"However, for any number placed into the grid, at least one of its (at most) four edge adjacent neighbour cells must contain same number in the solved puzzle as the cell itself has in original grid."
Could you please tell me why there's a 1 in R3C1 in the solution grid? I tried to understand this rule in 2 ways, but
1. None of the neighbours of R3C1 is 1 in the original grid.
2. None of the neighbours of R3C1 contain the same digit in the solution grid as in the original grid.
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Posts: 315
Location: The Netherlands | wicktroll - 2013-04-04 11:28 AM
Hi everyone,
I have a question about puzzle 16 Movable digits. The puzzle rule says (I'm sure I misunderstand it...):
"However, for any number placed into the grid, at least one of its (at most) four edge adjacent neighbour cells must contain same number in the solved puzzle as the cell itself has in original grid."
Could you please tell me why there's a 1 in R3C1 in the solution grid? I tried to understand this rule in 2 ways, but
1. None of the neighbours of R3C1 is 1 in the original grid.
2. None of the neighbours of R3C1 contain the same digit in the solution grid as in the original grid.
The rule doesn't apply reversely. The rule only states that one of the neighbours of a GIVEN digit, must contain that digit. This doesn't mean that every cell must be one of its given neighbours as equal digits can transfer to the same cell. For example look at R5C5. The clues in R4C5, R5C4, R5C6 and R6C5 all move to this cell. |
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Posts: 4
Location: Czech Republic | I tried to solve the IB (not only to read the instructions). When solving the puzzles number 4, 10, 11, 12, 13 and 14 I realized that I am not able to read my digits and pencil marks (all written by pencil), because the grey colour is too dark. Would it be possible to use a little bit lighter grey in the PB, please? |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | We'll prepare version 2 of IB with lighter grey to check is it better and after that define grey for PB.
Branko |
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Posts: 16
Location: Hungary | Thanks, it's clear now. |
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Location: India | skywalker - 2013-04-04 2:14 PM
We'll prepare version 2 of IB with lighter grey to check is it better and after that define grey for PB.
Updated version of IB uploaded, with gray cells being 25% gray. (Images for 13 Placement and 14 Thermo are not fixed, but they will use 25% gray in the puzzle booklet).
Hope it is better. |
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Posts: 4
Location: Czech Republic | Administrator - 2013-04-05 1:17 AM
skywalker - 2013-04-04 2:14 PM
We'll prepare version 2 of IB with lighter grey to check is it better and after that define grey for PB.
Updated version of IB uploaded, with gray cells being 25% gray. (Images for 13 Placement and 14 Thermo are not fixed, but they will use 25% gray in the puzzle booklet ).
Hope it is better.
Thanks a lot, it is much better. |
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Posts: 139
Location: Estonia | About word search:
1.The rule says that Find all given words. Do I really have to find all the words or do I need to solve the sudoku? Or you just want to say that it's not solvable if you don't find all the words?
2. What do you mean about Find all given words (only words with capital letters) in the words list? Do I have to find all the words or do I have to find only the words with capital letters. The rule speaks against itself.
TiiT |
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Posts: 148
Location: France | 1. I guess we have to read it as "words can be found in the grid and you'd better search them if you want to solve the sudoku", indeed.
2. I may be wrong but I suppose there will be something like a text accompanying the competition puzzle, with only some words in capital letters. |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | TiiT - 2013-04-11 10:52 AM
About word search:
1.The rule says that Find all given words. Do I really have to find all the words or do I need to solve the sudoku? Or you just want to say that it's not solvable if you don't find all the words?
2. What do you mean about Find all given words (only words with capital letters) in the words list? Do I have to find all the words or do I have to find only the words with capital letters. The rule speaks against itself.
TiiT
All words written by capital letters (there will be additional words in competition puzzle, that you can completely ignore during solve) are placed somewhere in solved sudoku. You don't need to mark words in solved grid. It is enough to solve sudoku according to this additional rules.
For example: BUENOS Aires, New YORK. Only BUENOS and YORK must be in solved sudoku.
Branko |
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Posts: 28
Location: Czech Republic | I hope you'll appreciate a little bit of practice on the next WPF round.
We are preparing for you these sudoku variants:
15.04.2013 - Quadruple (practice on WPF Sudoku Grand Prix — Serbian Round)
16.04.2013 - Arrow Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
17.04.2013 - Tennis Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
18.04.2013 - Little Killer (practice on WPF Sudoku Grand Prix — Serbian Round)
19.04.2013 - Thermo-sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
20.04.2013 - Renban Groups (practice on WPF Sudoku Grand Prix — Serbian Round)
21.04.2013 - Jigsaw Sudoku (practice on WPF Sudoku Grand Prix — Serbian Round)
More you can find on http://sudokucup.com/node/1901 |
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Posts: 139
Location: Estonia | About New YORK, actually the capital letters are NYORK, do I need to find N_ _ YORK somewhere, or NYORK somewhere (how do I need to take blanks). Or what if there is like SeRbIa, how do I have to act then? I just don't have it clear and I would like to avoid unpleasant surprises.
TiiT |
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Posts: 25
Location: India | word search -> words may be found in any of eight directions can someone clears it |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 164
Location: Slovakia | dp_94 - 2013-04-13 12:19 AM
word search -> words may be found in any of eight directions can someone clears it
Yes, all 8 directions are allowed. |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | TiiT - 2013-04-12 9:33 PM
About New YORK, actually the capital letters are NYORK, do I need to find N_ _ YORK somewhere, or NYORK somewhere (how do I need to take blanks). Or what if there is like SeRbIa, how do I have to act then? I just don't have it clear and I would like to avoid unpleasant surprises.
TiiT
Tiit, sorry if I confused you. There will be no surprises in competition puzzle. Words completely written using CAPITAL letters must be found somewhere in solved grid.
For New YORK, you need to place YORK somewhere in grid.
Branko |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | dp_94 - 2013-04-13 12:19 AM
word search -> words may be found in any of eight directions can someone clears it
The words may be placed in any direction: horizontally, vertically, diagonally, and forwards and backwards (8 directions in total).
Branko |
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Diagonal Vision Author
Posts: 337
Location: Switzerland | In the IB, rules of sudokus: "placement (shape) sudoku", "thermo-sudoku", "killer sudoku" and "movable digits" contain words "bolded region" instead of "bolded 3x3 box".
Will they all be irregular or is it just a little lack of precision of rules (examples have 3x3 boxes, except movable digits)?
Can we know exactly which sudokus will have irregular regions (example of movable digits has irregular regions, but the actual puzzle in WSC 2011 had 3x3 boxes)?
Thanks,
Fred
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | Fred76 - 2013-04-16 8:59 PM
In the IB, rules of sudokus: "placement (shape) sudoku", "thermo-sudoku", "killer sudoku" and "movable digits" contain words "bolded region" instead of "bolded 3x3 box".
Will they all be irregular or is it just a little lack of precision of rules (examples have 3x3 boxes, except movable digits)?
Can we know exactly which sudokus will have irregular regions (example of movable digits has irregular regions, but the actual puzzle in WSC 2011 had 3x3 boxes)?
Thanks,
Fred
Movable digits has irregular regions, all other sudokus are with 3x3 boxes.
P.S. In all three sudokus (placement, thermo, killer) will be some non-box shapes for sure...
Branko |
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Diagonal Vision Author
Posts: 337
Location: Switzerland | Thanks ! |
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Location: India | All sudokus in this contest can be solved online as well. Selected examples are available for online solving for practice purpose.
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Posts: 1
Location: Taiwan | Sorry, I don't still understand the 16th question. Original, I have the same idea with Wicktroll. But after Para's reply, I was confused. Could anyone explain how you solve this puzzle at first 3 or 5 steps? thanks.
About Para's reply, he said "The rule only states that one of the neighbors of a GIVEN digit, must contain that digit." what is the GIVEN digit? thanks. |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | robertolee - 2013-04-17 8:22 PM
Sorry, I don't still understand the 16th question. Original, I have the same idea with Wicktroll. But after Para's reply, I was confused. Could anyone explain how you solve this puzzle at first 3 or 5 steps? thanks.
About Para's reply, he said "The rule only states that one of the neighbors of a GIVEN digit, must contain that digit." what is the GIVEN digit? thanks.
For example: 6 is GIVEN digit (left grid) on R6C1. This digit 6 in solved grid must be on R5C1 or R6C2 and for sure this 6 doesn't leave region (bottom left).
GIVEN 6 on R5C1 must move on some of next cells: R5C2, R6C1, R4C1. First digit 6 is on R5C1 or R6C2, so that leaves only R4C1 as position for second 6.
After that you can conclude that first 6 is on R6C2.
You can try to continue using similar logic...
Branko |
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Location: India | About Movable Digits, in pictures
Any given digit in left grid, must appear at one of the 4 adjacent cells in the right grid.
In the grid below look at the marked cell with "A" in the left grid. It means, "A" must appear at least once in the marked cells in the right grid. (It could appear twice, but at least once).
Now here is the sudoku from the instruction booklet, with the solution next to it. You can see the rule being applied for each of the given digits in the left grid.
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Posts: 8
Location: Iran | Hello Admin,
Thank you for explaining Movable Digits rule.
Everything is clear.... |
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Sudoku Grand Prix - Serbian Round Author
Posts: 42
Location: Serbia | Thanks, Deb.
Branko
Edited by skywalker 2013-04-18 10:48 PM
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WPF Sudoku Grand Prix — Serbian Round — 20th - 22nd April 2013
