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Posts: 6
Location: China | 3. Mirage Sudoku
Is it allowed if the 'n'th cell is outside the grid?
Is it possible to have empty cells(without pencilmarks)in the first 'n' cells in the pointing direction? |
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WSPC Organizer
Posts: 739
  
Location: India | Qyz - 2017-10-03 1:56 PM
3. Mirage Sudoku
Is it allowed if the 'n'th cell is outside the grid?
Is it possible to have empty cells(without pencilmarks)in the first 'n' cells in the pointing direction?
The 'n'th cell cannot be outside the grid. We will add this clarification in the IB. Thanks.
All cells pointed by an arrow will contain a pencilmark, just like the example in the IB.
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Posts: 152
Location: United Kingdom | 11 Outside Sequence
Looking at the example, the ? at the top it seems to me can only validly be replaced a 4. This runs in direct contradiction to the instructions which state that "a ? should be replaceable by any digit from 1 to 9". The ?s on the left of the grid suggest that in fact the ? might validly take multiple values (e.g. 1,5 for row 4 and 4,8 for row 6). Could you please confirm that the ? might validly take multiple values for the competition puzzle?
I think it would also be helpful to explicitly state that the "arithmetic progression" is not necessarily in order (the grid does make this fairly clear) - contrary to what might be inferred by use of the word "progression". |
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WSPC Organizer
Posts: 739
Location: India | detuned - 2017-10-04 1:56 AM
11 Outside Sequence
Looking at the example, the ? at the top it seems to me can only validly be replaced a 4. This runs in direct contradiction to the instructions which state that "a ? should be replaceable by any digit from 1 to 9". The ?s on the left of the grid suggest that in fact the ? might validly take multiple values (e.g. 1,5 for row 4 and 4,8 for row 6). Could you please confirm that the ? might validly take multiple values for the competition puzzle?
I think it would also be helpful to explicitly state that the "arithmetic progression" is not necessarily in order (the grid does make this fairly clear) - contrary to what might be inferred by use of the word "progression".
Yes, the '?' can take multiple values, like the IB example. It is not required to fill in the question marks to get points. Will get this added in IB.
It is already mentioned that the arithmetic progression is not necessarily in order.
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Posts: 152
Location: United Kingdom | vopani - 2017-10-04 3:44 AM
Yes, the '?' can take multiple values, like the IB example. It is not required to fill in the question marks to get points. Will get this added in IB.
It is already mentioned that the arithmetic progression is not necessarily in order.
Ah yes I see that now, thank you Rohan, my mistake. |
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Posts: 315
Location: The Netherlands | Never mind. Answer is in the instructions.
Edited by Para 2017-10-05 12:35 PM
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SM 2020 (Math) Author
Posts: 157
Location: India | Big small count Sudoku
Does 4 inside a circle imply 4 neighbouring numbers greatest than 4 and 4 neighbouring numbers less than 4 . Or we could have one of these conditions in this case ? |
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WSPC Organizer
Posts: 739
Location: India | akash.doulani - 2017-10-08 5:46 PM
Big small count Sudoku
Does 4 inside a circle imply 4 neighbouring numbers greatest than 4 and 4 neighbouring numbers less than 4 . Or we could have one of these conditions in this case ?
It could be either. It could also be both.
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06 Think Different
