Asian Sudoku Championship 2025
Sudoku Champs 2024
Riad Khanmagomedov's April Contest — 16th to 23nd April 202389 posts • Page 2 of 4 • 1 2 3 4
@ 2023-04-18 11:40 AM (#31489 - in reply to #31435) (#31489) Top

auroux



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auroux posted @ 2023-04-18 11:40 AM

Ok thank you! Now it is clear.
@ 2023-04-18 2:31 PM (#31493 - in reply to #31489) (#31493) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-18 2:31 PM

auroux - 2023-04-18 11:40 AM

Ok thank you! Now it is clear.

It is allowed to use arithmetic signs on both sides of the equal sign.
@ 2023-04-18 5:01 PM (#31494 - in reply to #31435) (#31494) Top

Leonardo024




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Country : The Netherlands

Leonardo024 posted @ 2023-04-18 5:01 PM

For puzzle 5 (Navigation), the instruction says to form 8 connected areas along the grid lines, however only 6 letters are given. Does this imply that the other two regions do not occur in the 2 columns of the answer format (column 4 and 9)? Since the answer page also asks for digits and/or letters A-F (rather than A-H for 8 areas instead of 6).
@ 2023-04-18 10:43 PM (#31495 - in reply to #31435) (#31495) Top

Administrator



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Administrator posted @ 2023-04-18 10:43 PM

If you try the puzzle your question will be answered.
@ 2023-04-19 3:20 PM (#31497 - in reply to #31435) (#31497) Top

Nikola



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Nikola posted @ 2023-04-19 3:20 PM

Puzzle 10

Can we create equality without directly expressed result? For the example, is 32_PLUS_54=86_PLUS_0= allowed? Maybe this is a bad example because of zero but I hope you understand the question.
@ 2023-04-19 3:55 PM (#31498 - in reply to #31435) (#31498) Top

auroux



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auroux posted @ 2023-04-19 3:55 PM

Nikola: I think the answer is yes, and this is exactly what Riad meant when he wrote to me that "It is allowed to use arithmetic signs on both sides of the equal sign." What I am not sure about, though, is whether the answer key should include the final "=" (even though it is there when writing around the circle) - my current understanding based on the PB example is that the circular identity "32_PLUS_54=86_PLUS_0=..." is entered as "32_PLUS_54=86_PLUS_0" for the answer key.

Edited by auroux 2023-04-19 3:57 PM
@ 2023-04-19 4:27 PM (#31499 - in reply to #31435) (#31499) Top

Nikola



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Nikola posted @ 2023-04-19 4:27 PM

Okay, but in his example he still got a result 1 (in one direction). Another example: 9x2=6x3= ... I don't want to put =18 because it would give 81 in the opposite direction. Maybe confirmation would be useful.

Edited by Nikola 2023-04-19 4:35 PM
@ 2023-04-19 4:47 PM (#31502 - in reply to #31435) (#31502) Top

L00ping007



Posts: 11

Country : France

L00ping007 posted @ 2023-04-19 4:47 PM

In puzzle 10, there is a digit missing in the "Answer key" sentence
"68=45_PLUS_23, 32_PLUS_54=8" should be ", 68=45_PLUS_23, 32_PLUS_54=86" ;-)
@ 2023-04-19 6:36 PM (#31504 - in reply to #31497) (#31504) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-19 6:36 PM

Nikola - 2023-04-19 3:20 PM

Puzzle 10

Can we create equality without directly expressed result? For the example, is 32_PLUS_54=86_PLUS_0= allowed? Maybe this is a bad example because of zero but I hope you understand the question.

Yes
@ 2023-04-19 6:40 PM (#31505 - in reply to #31498) (#31505) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-19 6:40 PM

auroux - 2023-04-19 3:55 PM

Nikola: I think the answer is yes, and this is exactly what Riad meant when he wrote to me that "It is allowed to use arithmetic signs on both sides of the equal sign." What I am not sure about, though, is whether the answer key should include the final "=" (even though it is there when writing around the circle) - my current understanding based on the PB example is that the circular identity "32_PLUS_54=86_PLUS_0=..." is entered as "32_PLUS_54=86_PLUS_0" for the answer key.

In this case, write the answer as follows: 32_PLUS_54=86_PLUS_0 and 0_PLUS_68= 45_PLUS_23.
@ 2023-04-19 6:44 PM (#31506 - in reply to #31499) (#31506) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-19 6:44 PM

Nikola - 2023-04-19 4:27 PM

Okay, but in his example he still got a result 1 (in one direction). Another example: 9x2=6x3= ... I don't want to put =18 because it would give 81 in the opposite direction. Maybe confirmation would be useful.

I gave an example with 1 to demonstrate three equal signs. This example is more successful: 7-6=5-4=3-2=7-6=5-4=3-2= etc.
@ 2023-04-19 6:47 PM (#31507 - in reply to #31502) (#31507) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-19 6:47 PM

L00ping007 - 2023-04-19 4:47 PM

In puzzle 10, there is a digit missing in the "Answer key" sentence
"68=45_PLUS_23, 32_PLUS_54=8" should be ", 68=45_PLUS_23, 32_PLUS_54=86" ;-)

I'll correct it, thank you!
@ 2023-04-19 10:22 PM (#31509 - in reply to #31435) (#31509) Top

Barbitos



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Country : France

Barbitos posted @ 2023-04-19 10:22 PM

On Puzzle 11; does the minesweeper part in itself have to be unique or can it have multiple solutions but only one mine-loops pairing?
@ 2023-04-19 11:39 PM (#31510 - in reply to #31509) (#31510) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-19 11:39 PM

Barbitos - 2023-04-19 10:22 PM

On Puzzle 11; does the minesweeper part in itself have to be unique or can it have multiple solutions but only one mine-loops pairing?

Quote from the text: "Create a Minesweeper puzzle with a unique solution".
@ 2023-04-19 11:47 PM (#31511 - in reply to #31510) (#31511) Top

Barbitos



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Country : France

Barbitos posted @ 2023-04-19 11:47 PM

thanks :) i figured that was probably the case but wanted to make sure

also thanks for hosting this contest, i'm having a blast solving those devilish puzzles
@ 2023-04-20 12:54 AM (#31512 - in reply to #31510) (#31512) Top

auroux



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auroux posted @ 2023-04-20 12:54 AM

Riad Khanmagomedov - 2023-04-19 10:39 AM
Barbitos - 2023-04-19 10:22 PMOn Puzzle 11; does the minesweeper part in itself have to be unique or can it have multiple solutions but only one mine-loops pairing?
Quote from the text: "Create a Minesweeper puzzle with a unique solution".
Oh, that's so disappointing. It would have been more elegant to have to create a puzzle whose solution is unique when one takes into account the requirement that there should exist a loop (but which may have multiple solutions as a pure minesweeper puzzle) -- so much so that I assumed that it was actually the task. Oh well, I shall redo it to make something that is also unique as a minesweeper puzzle. I was so happy with my submission, but it's definitely not unique at all as a minesweeper.
@ 2023-04-20 10:57 AM (#31516 - in reply to #31435) (#31516) Top

pinkagape



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Country : United Kingdom

pinkagape posted @ 2023-04-20 10:57 AM

In Puzzle 6, I'm a bit confused by the "vice versa" in the instructions for Turns. Is it saying that if the loop doesn't turn and enters a cell without a circle, then it must turn in the next cell (so you can't have more than one straight in a row)?
@ 2023-04-20 11:35 AM (#31518 - in reply to #31512) (#31518) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-20 11:35 AM

auroux - 2023-04-20 12:54 AM

Riad Khanmagomedov - 2023-04-19 10:39 AM
Barbitos - 2023-04-19 10:22 PMOn Puzzle 11; does the minesweeper part in itself have to be unique or can it have multiple solutions but only one mine-loops pairing?
Quote from the text: "Create a Minesweeper puzzle with a unique solution".
Oh, that's so disappointing. It would have been more elegant to have to create a puzzle whose solution is unique when one takes into account the requirement that there should exist a loop (but which may have multiple solutions as a pure minesweeper puzzle) -- so much so that I assumed that it was actually the task. Oh well, I shall redo it to make something that is also unique as a minesweeper puzzle. I was so happy with my submission, but it's definitely not unique at all as a minesweeper.

Denis, I will check the uniqueness of the Minesweeper puzzle, and then watch a loop.
@ 2023-04-20 11:40 AM (#31519 - in reply to #31516) (#31519) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-20 11:40 AM

pinkagape - 2023-04-20 10:57 AM

In Puzzle 6, I'm a bit confused by the "vice versa" in the instructions for Turns. Is it saying that if the loop doesn't turn and enters a cell without a circle, then it must turn in the next cell (so you can't have more than one straight in a row)?

In this part of the grid, the line behaves like in the puzzle "Every second turn". If there was a turn in a circle, then the next turn will be in a cell without a circle, then again in a circle, etc.
@ 2023-04-20 5:18 PM (#31523 - in reply to #31435) (#31523) Top

L00ping007



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Country : France

L00ping007 posted @ 2023-04-20 5:18 PM

Puzzle 6
"It is also possible for the line to make a turn and leave the grid, in this case it can turn in the next grid before meeting a circle."

Is there a vice versa too ? When the last turn before leaving the grid is a circle ?

Isn't it more accurate to say :
"It is also possible for the line to make a turn and leave the grid, in this case :
- if the last turn in the grid isn't a circle, it can turn in the next grid before meeting a circle.
- if the last turn in the grid is a circle, it can turn in the next grid at a circle"
?
@ 2023-04-20 11:41 PM (#31527 - in reply to #31435) (#31527) Top

prasanna16391



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prasanna16391 posted @ 2023-04-20 11:41 PM

A new puzzle booklet has been uploaded with changes to the text in Puzzle 10's rules, to reflect the discussions here.
@ 2023-04-20 11:42 PM (#31528 - in reply to #31523) (#31528) Top

prasanna16391



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prasanna16391 posted @ 2023-04-20 11:42 PM

L00ping007 - 2023-04-20 5:18 PM

Puzzle 6
"It is also possible for the line to make a turn and leave the grid, in this case it can turn in the next grid before meeting a circle."

Is there a vice versa too ? When the last turn before leaving the grid is a circle ?

Isn't it more accurate to say :
"It is also possible for the line to make a turn and leave the grid, in this case :
- if the last turn in the grid isn't a circle, it can turn in the next grid before meeting a circle.
- if the last turn in the grid is a circle, it can turn in the next grid at a circle"
?


Yes, this is what is intended to be conveyed.
@ 2023-04-21 12:02 AM (#31529 - in reply to #31435) (#31529) Top

EoHeongMat



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Country : South Korea

EoHeongMat posted @ 2023-04-21 12:02 AM

Puzzle 12

Must all words be connected?
@ 2023-04-21 12:35 PM (#31531 - in reply to #31529) (#31531) Top

Riad Khanmagomedov



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Riad Khanmagomedov posted @ 2023-04-21 12:35 PM

EoHeongMat - 2023-04-21 12:02 AM

Puzzle 12

Must all words be connected?

Yes, of course.
@ 2023-04-21 3:39 PM (#31532 - in reply to #31531) (#31532) Top

auroux



Posts: 145
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auroux posted @ 2023-04-21 3:39 PM

Riad Khanmagomedov - 2023-04-20 11:35 PM
EoHeongMat - 2023-04-21 12:02 AMPuzzle 12Must all words be connected?
Yes, of course.
Well, that's not what the PB says. "Each name should intersect with at least one other" is not the same thing, and would be redundant if all words were connected.Another 12 hours of time wasted on solving one of these with the wrong set of instructions, and this time I don't think it was entirely my fault...(Sorry for being negative. But it is extremely frustrating.)
Riad Khanmagomedov's April Contest — 16th to 23nd April 202389 posts • Page 2 of 4 • 1 2 3 4
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