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vopani
Posts: 739
  
Country : India | vopani posted @ 2017-10-01 8:21 PM Round 9: Dress Them Up
Please post your questions about this round here.
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Para
Posts: 315
Country : The Netherlands | Para posted @ 2017-10-02 2:27 PM 8. Kid Sudoku
The rules are a bit awkwardly formulated if they match the normal Kid Sudoku rules. Can you guys confirm that each digit indicates the maximum possible sum of continuous digits that doesn't exceed 9? The confusion is that the way the rules are written now the sequence 5136 could for example be encoded as 96, 69 or even 546 as those are all sums of continuous digits not exceeding 9 for this seqeunce, while in the standard Kid Sudoku rules it would have to be 96 as you keep adding till you no longer can without exceeding 9. |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-02 3:52 PM Para - 2017-10-02 2:27 PM
8. Kid Sudoku
The rules are a bit awkwardly formulated if they match the normal Kid Sudoku rules. Can you guys confirm that each digit indicates the maximum possible sum of continuous digits that doesn't exceed 9? The confusion is that the way the rules are written now the sequence 5136 could for example be encoded as 96, 69 or even 546 as those are all sums of continuous digits not exceeding 9 for this seqeunce, while in the standard Kid Sudoku rules it would have to be 96 as you keep adding till you no longer can without exceeding 9.
It is the standard Kid Sudoku rules. So, 5136 must be 96.
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forcolin
Posts: 172
Country : ITALY | 16. Unique sums sudoku. "The sum of digits in cells inside every cage most equal to the total given for the cage in the upper left cell" But there are no totals given in the upper left cells..... |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-03 9:05 AM forcolin - 2017-10-03 2:13 AM
16. Unique sums sudoku. "The sum of digits in cells inside every cage most equal to the total given for the cage in the upper left cell" But there are no totals given in the upper left cells.....
The sums may or may not be given, as per the instructions. It is possible no sums are given like the example.
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Para
Posts: 315
Country : The Netherlands | Para posted @ 2017-10-05 8:19 AM 6. Crossed Sudoku
Assuming Crosses can appear anywhere in the grid, may Crosses have repeated digits?
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-05 10:02 AM Para - 2017-10-05 8:19 AM
6. Crossed Sudoku
Assuming Crosses can appear anywhere in the grid, may Crosses have repeated digits?
Yes, that is correct.
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sinchai4547
Posts: 12
Country : Thailand | For Confused knights Sudoku
is there more solution (5 and 9 in cells r1c1 r3c1 and r1c4 r3c4)? or i miss some rule. |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-05 10:07 PM sinchai4547 - 2017-10-05 8:36 PM
For Confused knights Sudoku
is there more solution (5 and 9 in cells r1c1 r3c1 and r1c4 r3c4)? or i miss some rule.
'5' is present in a shaded cell, like R5C7 or R6C6. Hence, no two '5's can be placed at knight's step away from each other.
There is a '5' in R4C3, so there cannot be a '5' in R3C1.
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purifire
Posts: 460
Country : India | In the IB Example, I am getting multiple solution for the Maximum Arrow Sudoku. Am I missing any rule/constraint here. The 2 and 6 in R1 and R9 are interchangeable. |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-06 10:16 PM purifire - 2017-10-06 5:40 PM
In the IB Example, I am getting multiple solution for the Maximum Arrow Sudoku. Am I missing any rule/constraint here. The 2 and 6 in R1 and R9 are interchangeable.
R5C5 = 6 with a circle. If you swap the 2s and 6s in R1 and R9, that arrow with '6' won't be satisfied.
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purifire
Posts: 460
Country : India | vopani - 2017-10-06 10:16 PM
purifire - 2017-10-06 5:40 PM
In the IB Example, I am getting multiple solution for the Maximum Arrow Sudoku. Am I missing any rule/constraint here. The 2 and 6 in R1 and R9 are interchangeable.
R5C5 = 6 with a circle. If you swap the 2s and 6s in R1 and R9, that arrow with '6' won't be satisfied.
Why cant I have a 6 in R1C9? How does it negate the condition? |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-06 10:26 PM purifire - 2017-10-06 10:19 PM
vopani - 2017-10-06 10:16 PM
purifire - 2017-10-06 5:40 PM
In the IB Example, I am getting multiple solution for the Maximum Arrow Sudoku. Am I missing any rule/constraint here. The 2 and 6 in R1 and R9 are interchangeable.
R5C5 = 6 with a circle. If you swap the 2s and 6s in R1 and R9, that arrow with '6' won't be satisfied.
Why cant I have a 6 in R1C9? How does it negate the condition?
R1C9 must be '6', as in the solution.
If you swap R1C7 and R1C9, and corresponding R9C7 and R9C9, the arrow starting at R5C5 with a '6' would have digits 3, 3, 5, 2 along its arrow, and hence, does not satisfy the 'maximum' rule.
If its still not clear, it would help if you could share your solution which doesn't match the one in the IB.
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akash.doulani
Posts: 158
Country : India | Rhombus Sudoku
Is it necessary that there will be 9 rhombus and that each rhombus will have 9 different numbers in the middle ? |
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vopani
Posts: 739
Country : India | vopani posted @ 2017-10-08 2:04 PM akash.doulani - 2017-10-08 1:15 PM
Rhombus Sudoku
Is it necessary that there will be 9 rhombus and that each rhombus will have 9 different numbers in the middle ?
No.
That is just the theme of the IB example :- )
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@ 2017-10-02 2:27 PM (#23385 - in reply to #23334) (#23385) Top