The New Sudoku Players' Forum

[silvercar]

Anyone help on this one? I've found one X-wing so far.

[Pi]

is that the X-wing of 7's in collums 1 and 9

i found that but got stuck then

[Bigtone53]

Anyone help on this one? I've found one X-wing so far.

I did not consciously use an x-wing on this. My breakthrough was finding a hidden trio in row 8.

[CathyW]

I had used the x-wing of 7s to make some eliminations but as Bigtone said, the key was the hidden triple in row 8. Took me ages to spot it though.

[Pi]

I've throughn away my paper, can anyone give me a link to the puzzle?

[alanh]

Well done everyone for spotting the hidden triple. Well hidden! Imust admit I'd started to tire of Su Doku, thinking I'd got the hang of the very hard ones using X-Wings and triples. But I didn't spot this one!
The Killer in the Times today (12/12/2005) was also more interesting than usual, with having to use the rule of no repeated numbers in a box.

[boredjane]

Help! Found the x-wing .. but what hidden trio??? Am I just being dim?

[Crazy Girl]

Jane

The Hidden Trio is in R8 which reads:

Code: Select all

347    367    34567    2569*    1    56    278    2589*    67

So you are looking for 3 numbers (say a, b, c) that only appear in 3 cells, and any other numbers that appear with these 3 numbers (a, b, c) can be deleted.
the 3 numbers do not have to appear in all three cells, although they do each appear at least twice.

Once you have found this you will spot a Naked Pair in a column, using one of the Hidden Trio/Triple cells, that will lead to a Naked Single.

If you need any more help post you candidate grid and we'll try and give you more hints.

[digby]

I thought I understood the concept of a triple, but surely that must apply to 3 cells? Here we appear to only have 2569 and 2589. Which is the third cell which allows further eliminations?

Thanks
Digby

[domt]

347 367 34567 2569* 1 56 278 2589* 67

I believe the other star should be after the 278.

Hope this helps

Dom

[/quote]

[Pat]

I thought I understood the concept of a triple, but surely that must apply to 3 cells?
Here we appear to only have 2569 and 2589.
Which is the third cell which allows further eliminations?

Thanks
Digby

the 3 digits { 2,8,9 }
have only 3 cells available in r8.

this settles the 6 for c4.


as Bigtone53 suggested,
the X-wing in this puzzle is just a red herring.


- Pat

The Sunday Times #20 ( 2005.Dec.11 )

[digby]

Thanks. Now I see why it is "hidden". Clever!

[Crazy Girl]

I thought I understood the concept of a triple, but surely that must apply to 3 cells? Here we appear to only have 2569 and 2589. Which is the third cell which allows further eliminations?

Thanks
Digby

Sorry,

I asterixed two of the cells in the triple and left the third for you to work out so you understood the principle, will next time make this clearer.

[Cec]

Anyone help on this one? I've found one X-wing so far.

Hi silvercar,
This seems an interesting post but suggest submitting the puzzle would make it even more interesting.
Cec

I've throughn away my paper, can anyone give me a link to the puzzle?

Hi Pi,
You've got me excited!. Here's hoping we will both now get a peek
Cec

[afjt]

Given that this is listed in "The Times" forum, you could try looking for it on the Times' website..
http://www.timesonline.co.uk/article/0,,18209-1901410,00.html !