Sunday times 11/12/05 superior 20

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Sunday times 11/12/05 superior 20

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

Posts: 24
Joined: 05 July 2005

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

i found that but got stuck then
Pi

Posts: 389
Joined: 27 May 2005

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.
Bigtone53

Posts: 413
Joined: 19 September 2005

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.
CathyW

Posts: 316
Joined: 20 June 2005

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

Posts: 389
Joined: 27 May 2005

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.
alanh

Posts: 6
Joined: 18 September 2005

Sunday Times 11.12.05

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

Posts: 1
Joined: 12 December 2005

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.
Crazy Girl

Posts: 189
Joined: 08 November 2005

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
digby

Posts: 4
Joined: 13 December 2005

347 367 34567 2569* 1 56 278 2589* 67

I believe the other star should be after the 278.

Hope this helps

Dom

[/quote]
domt

Posts: 16
Joined: 01 September 2005

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

digby wrote: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 )

Pat

Posts: 3676
Joined: 18 July 2005

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

Posts: 4
Joined: 13 December 2005

digby wrote: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.
Crazy Girl

Posts: 189
Joined: 08 November 2005

Re: Sunday times 11/12/05 superior 20

silvercar wrote: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
Pi wrote: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
Cec

Posts: 1039
Joined: 16 June 2005

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 !
afjt

Posts: 82
Joined: 07 September 2005

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