| View previous topic :: View next topic |
| Author |
Message |
leocar
Joined: 04 Mar 2010
Posts: 12
|
 Posted: Fri May 14, 2010 10:46 am Post subject: Local Paper Puzzle |
 |
|
Hi,
below is where I got with basics (further below is the original puzzle) but can't get any further. The puzzle is out of a local paper. The grader says it’s too difficult, is this true and it’s a miss print or is it just too hard for the solver? Thank you
Leo
| Code: |
+-------------+------------+----------------+
| 5 3 689 | 2 18 7 | 169 16 4 |
| 79 27 1 | 49 6 349 | 5 23 8 |
| 69 4 2689 | 5 18 39 | 12369 7 1369 |
+-------------+------------+----------------+
| 3 69 5 | 169 7 8 | 16 4 2 |
| 4 8 7 | 16 5 2 | 136 9 136 |
| 2 1 69 | 3 4 69 | 8 5 7 |
+-------------+------------+----------------+
| 19 5 29 | 46 23 46 | 7 8 139 |
| 167 27 3 | 8 9 5 | 4 126 16 |
| 8 69 4 | 7 23 1 | 2369 236 5 |
+-------------+------------+----------------+
|
Original puzzle
| Code: |
+-------+-------+-------+
| . . . | 2 . 7 | . . 4 |
| . . 1 | . 6 . | 5 . . |
| . 4 . | . . . | . 7 . |
+-------+-------+-------+
| 3 . . | . . 8 | . . 2 |
| . 8 . | . 5 . | . 9 . |
| 2 . . | 3 . . | . . 7 |
+-------+-------+-------+
| . 5 . | . . . | . 8 . |
| . . 3 | . 9 . | 4 . . |
| 8 . . | 7 . 1 | . . . |
+-------+-------+-------+
|
|
|
| Back to top |
|
 |
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Fri May 14, 2010 11:22 am Post subject: |
|
|
Hi leocar,
You're actually not too far away and it seems that your solver is out of whack or you have turned something off!
From your last position look for an X-Wing on 2s.......then just one step more and you will be done. |
|
| Back to top |
|
|
leocar
Joined: 04 Mar 2010
Posts: 12
|
| Posted: Fri May 14, 2010 11:41 am Post subject: |
|
|
| Is it the 2 in R9C8 which is eliminated leaving 36 but I can't see the next step. Much to my frustration! Is there another X wing that I'm missing?[/quote] |
|
| Back to top |
|
|
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Fri May 14, 2010 1:31 pm Post subject: |
|
|
Yes that's the one.
Then, depends what you do next but I favour a simple XY Chain which will take out the 2 at r7c5. 
Hope that helps. |
|
| Back to top |
|
|
Kdelle
Joined: 20 Mar 2008
Posts: 59
Location: Hudson, NH
|
| Posted: Fri May 14, 2010 5:26 pm Post subject: |
|
|
| After the X wing 2, the w wing 23 in boxes 3 and 8, with the strong link on 2 in c7 eliminates the 3 in r9c8....leaving only the 6 in that position. |
|
| Back to top |
|
|
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Fri May 14, 2010 5:45 pm Post subject: |
|
|
| So there you are leo - depends what you prefer! |
|
| Back to top |
|
|
Steve R
Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
|
| Posted: Fri May 14, 2010 8:26 pm Post subject: |
|
|
Kathy’s neat W-wing does the trick all on its own.
Steve |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Fri May 14, 2010 8:42 pm Post subject: |
|
|
Here's another approach.
| Code: | X-Wing in <2> followed by Naked Pair <69> and other basics
*--------------------------------------------------------------------*
| 5 369 689 | 2 18 7 | 1369 136 4 |
| 79 *2379 1 | 49 6 349 | 5 *23 8 |
| 69 4 2689 | 5 18 39 | 12369 7 1369 |
|----------------------+----------------------+----------------------|
| 3 69 5 | 169 7 8 | 16 4 2 |
| 4 8 7 | 16 5 2 | 136 9 136 |
| 2 1 69 | 3 4 69 | 8 5 7 |
|----------------------+----------------------+----------------------|
| 19 5 29 | 46 23 46 | 7 8 139 |
| 167 *267 3 | 8 9 5 | 4 *126 16 |
| 8 69-2 4 | 7 23 1 | 2369 36-2 5 |
*--------------------------------------------------------------------*
|
| Code: | after X-Wing in <2> and more basics: 2-String Kite in <9>
*--------------------------------------------------------------------*
| 5 3 689* | 2 18 7 | 169* 16 4 |
| 79 27 1 | 49 6 349 | 5 23 8 |
| 69 4 2689 | 5 18 39 | 12369 7 1369* |
|----------------------+----------------------+----------------------|
| 3 69 5 | 169 7 8 | 16 4 2 |
| 4 8 7 | 16 5 2 | 136 9 136 |
| 2 1 69 | 3 4 69 | 8 5 7 |
|----------------------+----------------------+----------------------|
| 19 5 2-9 | 46 23 46 | 7 8 139* |
| 167 27 3 | 8 9 5 | 4 126 16 |
| 8 69 4 | 7 23 1 | 2369 36 5 |
*--------------------------------------------------------------------*
|
|
|
| Back to top |
|
|
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Fri May 14, 2010 8:42 pm Post subject: |
|
|
| Steve, according to Kathy, just like the xy chain, It needs the X wing first otherwise there is no strong link on 2s in c7. |
|
| Back to top |
|
|
leocar
Joined: 04 Mar 2010
Posts: 12
|
| Posted: Sat May 15, 2010 4:15 am Post subject: |
|
|
Thank you for the responses. I think I have the W-Wing worked out (I hope). So if the start is the R2C8 23 then linked to the 2 in R3C7, then linked to the 2 in R9C7 and ending with the 23 in R9C5. Now since R9C8 links both the 23's, the 3 can be eliminated, is that correct?
| Code: |
+-------------+------------+----------------+
| 5 3 689 | 2 18 7 | 169 16 4 |
| 79 27 1 | 49 6 349 | 5 @23 8 |
| 69 4 2689 | 5 18 39 | @12369 7 1369 |
+-------------+------------+----------------+
| 3 69 5 | 169 7 8 | 16 4 2 |
| 4 8 7 | 16 5 2 | 136 9 136 |
| 2 1 69 | 3 4 69 | 8 5 7 |
+-------------+------------+----------------+
| 19 5 29 | 46 23 46 | 7 8 139 |
| 167 27 3 | 8 9 5 | 4 126 16 |
| 8 69 4 | 7 @23 1 | @2369 *36 5 |
+-------------+------------+----------------+
|
|
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Sat May 15, 2010 5:03 am Post subject: |
|
|
| leocar wrote: | Thank you for the responses. I think I have the W-Wing worked out (I hope). So if the start is the R2C8 23 then linked to the 2 in R3C7, then linked to the 2 in R9C7 and ending with the 23 in R9C5. Now since R9C8 links both the 23's, the 3 can be eliminated, is that correct?
| Code: |
+-------------+------------+----------------+
| 5 3 689 | 2 18 7 | 169 16 4 |
| 79 27 1 | 49 6 349 | 5 @23 8 |
| 69 4 2689 | 5 18 39 | @12369 7 1369 |
+-------------+------------+----------------+
| 3 69 5 | 169 7 8 | 16 4 2 |
| 4 8 7 | 16 5 2 | 136 9 136 |
| 2 1 69 | 3 4 69 | 8 5 7 |
+-------------+------------+----------------+
| 19 5 29 | 46 23 46 | 7 8 139 |
| 167 27 3 | 8 9 5 | 4 126 16 |
| 8 69 4 | 7 @23 1 | @2369 *36 5 |
+-------------+------------+----------------+
|
|
I think a more conventional wording would be that the two 23 cells are connected by a strong link on 2 in c7. If r3c7=2, then r2c8=3. If r9c7=2, then r9c5=3. Since at least one of the 23 cells must be=3, the 3s act as pincers, eliminating the 3 from r9c8. |
|
| Back to top |
|
|
Steve R
Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
|
| Posted: Sat May 15, 2010 12:26 pm Post subject: |
|
|
MM
It’s of minimal interest but, for what it’s worth, I also got straight to Leo’s grid in the very first post with its conjugates for 2 in column 7.
Steve |
|
| Back to top |
|
|
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Sat May 15, 2010 8:25 pm Post subject: |
|
|
| Yes - I was confused by the remark to Kathy. The X wing is not needed. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
