Post the puzzle or solving technique that's causing you trouble and someone will help

489, 6, 248, 1, 5, 479, 3, 4789, 248
7, 1, 24, 8, 3, 49, 4569,459, 2456
489, 3, 5, 479, 2, 6, 489, 4789, 1

1, 2, 46, 3, 689, 489, 7, 458, 458
5, 9, 467, 467, 678, 2, 48, 1, 3
48,478,3, 47, 1, 5, 2, 6, 9

3, 4578, 478, 2, 6789, 789, 1, 4589, 4568
6, 458, 1, 59, 89, 3, 4589, 2, 7
2, 578, 567, 4, 1, 568, 3, 568
Kites

Posts: 48
Joined: 20 May 2005

You only have information for eight cells in the last row.
daj95376
2014 Supporter

Posts: 2624
Joined: 15 May 2006

oops sorry;
2, 578, 9, 567, 4, 1, 568, 3, 568
Kites

Posts: 48
Joined: 20 May 2005

hi Kites & welcome to this forum,

It would help emmensely if you would read the "How to ask for help" sticky thread on this section of the forum........

your puzzle had a hint of symmetry which allowed me to re-create it...
Code: Select all
` . 6 . | 1 5 . | 3 . .   7 1 . | 8 . . | . . .   . . 5 | . . 6 | . . 1  -------+-------+------  1 2 . | 3 . . | 7 . .   5 9 . | . . . | . 1 3   . . 3 | . . 5 | . 6 9  -------+-------+------  3 . . | 2 . . | 1 . .   . . . | . . 3 | . 2 7   . . 9 | . 4 1 | . 3 . `
you reached in your solution to this point...
Code: Select all
`*--------------------------------------------------------*| 489   6     248  | 1     5     479  | 3     4789  248  || 7     1     24   | 8     3     49   | 4569  459   2456 || 489   3     5    | 479   2     6    | 489   4789  1    ||------------------+------------------+------------------|| 1     2     46   | 3     689   489  | 7     458   458  || 5     9     467  | 467   678   2    | 48    1     3    || 48    478   3    | 47    1     5    | 2     6     9    ||------------------+------------------+------------------|| 3     4578  478  | 2     6789  789  | 1     4589  4568 || 6     458   1    | 59    89    3    | 4589  2     7    || 2     578   9    | 567   4     1    | 568   3     568  |*--------------------------------------------------------*`

here you have 2 x-wings formed out of the digit 7 (choose one) ... 2 smaller obstacles after that......

Nice superior level puzzle...

tarek

tarek

Posts: 2973
Joined: 05 January 2006

anyone there?
Kites

Posts: 48
Joined: 20 May 2005

### 30 clues, needs X-wing

Kites wrote:anyone there?

hi Kites - and welcome back - you've certainly been gone a long time!

continuing tarek's comment,
the original puzzle may have been this [ 30 clues ] -
Code: Select all
` . 6 . | 1 5 . | 3 . .   7 1 . | 8 . . | . . .   . . 5 | . . 6 | . . 1  -------+-------+------  1 2 . | 3 . . | 7 . .   5 . . | . . . | . . 3   . . 3 | . . 5 | . 6 9  -------+-------+------  3 . . | 2 . . | 1 . .   . . . | . . 3 | . 2 7   . . 9 | . 4 1 | . 3 . `

- and "hidden singles" will get us 11 cells, reaching 41 -
Code: Select all
` . 6 . | 1 5 . | 3 . .  7 1 . | 8 3 . | . . .  . 3 5 | . 2 6 | . . 1 -------+-------+------ 1 2 . | 3 . . | 7 . .  5 9 . | . . 2 | . 1 3  . . 3 | . 1 5 | 2 6 9 -------+-------+------ 3 . . | 2 . . | 1 . .  6 . 1 | . . 3 | . 2 7  2 . 9 | . 4 1 | . 3 . `

- where an X-wing is needed--

~ Pat

Pat

Posts: 3793
Joined: 18 July 2005

### Let's complicate a little

Code: Select all
` *------------------------------------------------------* | 489   6     248 | 1     5     479 | 3     4789  248  | | 7     1     24  | 8     3     49  | 4569  459   2456 | | 489   3     5   | 479   2     6   | 489   4789  1    | |-----------------+-----------------+------------------| | 1     2     46  | 3     689   489 | 7     458   458  | | 5     9     467 | 467   678   2   | 48    1     3    | | 48    478   3   | 47    1     5   | 2     6     9    | |-----------------+-----------------+------------------| | 3     4578  478 | 2     6789  789 | 1     4589  4568 | | 6     458   1   | 59    89    3   | 4589  2     7    | | 2     578   9   | 567   4     1   | 568   3     568  | *------------------------------------------------------*`

Let’s consider A(5,8,9)=[r8c45], B(4,5,8,9)=[r258c7], C(4,5,6,7,9)=[r3569c4], D(5,6,7,8)=[r9c279], E(4,7,8,9)=[r127c6].
Now we have r8c4=5 or r8c5=8. But: if r8c4~5 => A locked => E locked => r3c4=7 => r6c4<>7 => r6c2=7 => D locked; if r8c5~8 => A locked => B locked => C locked. So, r8c4=5 and r8c5=8.

Carcul
Carcul

Posts: 724
Joined: 04 November 2005

I am still struggling. Unless I am completely on the wrong track, I have now managed to further add three digits; 7 - r1c6, 7 - r3c8 and 5 - r8c4.
I cannot see the next move.

Kites

Posts: 48
Joined: 20 May 2005

Kites wrote:I am still struggling. Unless I am completely on the wrong track, I have now managed to further add three digits; 7 - r1c6, 7 - r3c8 and 5 - r8c4.
I cannot see the next move.

Then it should look like this:
Code: Select all
` . 6 . | 1 5 7 | 3 . .  7 1 . | 8 3 . | . . .  . 3 5 | . 2 6 | . 7 1 -------+-------+------  1 2 . | 3 . . | 7 . .  5 9 . | . . 2 | . 1 3  . . 3 | . 1 5 | 2 6 9 -------+-------+------  3 . . | 2 . . | 1 . .  6 . 1 | 5 . 3 | . 2 7  2 . 9 | . 4 1 | . 3 . `

Look at column 4, that should give you the next move.

RW
RW
2010 Supporter

Posts: 1000
Joined: 16 March 2006

I can't believe I didn't spot the move in column 4!!! Could not see the wood for the trees....
Thank you very much RW and Tarek for guiding me in the first place.
Kites

Posts: 48
Joined: 20 May 2005

### X-wing - 6 = 2 + 1 + 1 + 2

tarek wrote:you have 2 X-wings formed out of the digit 7 (choose one)

seems an unusual situation with the the X-wing: with the digit missing 6 times, we expect an X-wing and a Jellyfish ( 6 = 2 + 4 ); or sometimes, an X-wing and a Swordfish ( 6 = 2 + 1 + 3 ) — find either one of them to create a "single"; but here we have 2 X-wings ( 6 = 2 + 1 + 1 + 2 ) — find either one of them to create two "singles"!

Pat

Posts: 3793
Joined: 18 July 2005

From Carcul's code Mon Nov 27, 2006 3:59 pm 4 does not work in r2c3. That makes r1c3 48 and 4 leads to a solution.
Len

Posts: 25
Joined: 04 August 2006