| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Mon Jun 20, 2011 2:46 am Post subject: Puzzle 11/06/19: ~ Advanced |
 |
|
Basics are an initial grind.
| Code: | +-----------------------+
| 5 . 9 | . . . | 8 1 2 |
| . 3 . | . 7 . | . . . |
| 4 . 1 | . . . | . . 7 |
|-------+-------+-------|
| . . . | 7 2 . | . 4 . |
| . 4 . | 6 3 . | . . . |
| . . . | . . 4 | . . 1 |
|-------+-------+-------|
| 3 . . | . . . | 7 . 9 |
| 9 . . | 2 . . | . 6 . |
| 6 . 4 | . . 7 | 1 . 8 |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Tue Jun 21, 2011 2:51 am Post subject: |
|
|
A two step "Advanced" level solution............
| Quote: | Type 4 UR(18)r45c18; r5c16<>8
xy-wing (19-8) vertex (19)r5c6 and pseudocell (98)r5c73; r4c1<>8
|
Ted |
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Tue Jun 21, 2011 6:20 am Post subject: |
|
|
Another angle
| Code: | *-----------------------------------------------------------*
| 5 7 9 | 34 46 36 | 8 1 2 |
| 28 3 268 | 1 7 2589 | 456 59 46 |
| 4 268 1 |*589 *589 2589 | 356 359 7 |
|-------------------+-------------------+-------------------|
| 18 569 356 | 7 2 18 | 369 4 36 |
| 1278 4 28 | 6 3 189 | 29 78 5 |
| 278 69 36 |*589 *589 4 | 2369 78 1 |
|-------------------+-------------------+-------------------|
| 3 1 258 | 458 46 568 | 7 25 9 |
| 9 58 7 | 2 1 358 | 345 6 34 |
| 6 25 4 |*359 *59 7 | 1 235 8 |
*-----------------------------------------------------------* |
| Quote: | Type 1 MUG, r9c4=(3)
8s: r8c6=r8c2-r3c2=r2c13 =>r2c6<>8 |
|
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Tue Jun 21, 2011 10:11 am Post subject: |
|
|
Another angle, a one-step MUG(?)...
| Code: | *-----------------------------------------------------------*
| 5 7 9 | 34 46 36 | 8 1 2 |
| 28 3 268 | 1 7 2589 | 456 59 46 |
| 4 268 1 | 589 589 2589 | 356 359 7 |
|-------------------+-------------------+-------------------|
|*18 569 356 | 7 2 *18 | 369 4 36 |
|*178+2 4 8-2 | 6 3 *18+9 | (29) *78 5 |
|*78+2 69 36 | 589 589 4 | 2369 *78 1 |
|-------------------+-------------------+-------------------|
| 3 1 258 | 458 46 568 | 7 25 9 |
| 9 58 7 | 2 1 358 | 345 6 34 |
| 6 25 4 | 359 59 7 | 1 235 8 |
*-----------------------------------------------------------* |
Overlapping UR(18) and UR(78)...
| Code: | | MUG(178)[(2)r56c1=(9)r5c6] - (9=2)r5c7 ; r5c3<>2 |
|
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Tue Jun 21, 2011 1:38 pm Post subject: |
|
|
| peterj wrote: | Another angle, a one-step MUG(?)...
| Code: | *-----------------------------------------------------------*
| 5 7 9 | 34 46 36 | 8 1 2 |
| 28 3 268 | 1 7 2589 | 456 59 46 |
| 4 268 1 | 589 589 2589 | 356 359 7 |
|-------------------+-------------------+-------------------|
|*18 569 356 | 7 2 *18 | 369 4 36 |
|*178+2 4 8-2 | 6 3 *18+9 | (29) *78 5 |
|*78+2 69 36 | 589 589 4 | 2369 *78 1 |
|-------------------+-------------------+-------------------|
| 3 1 258 | 458 46 568 | 7 25 9 |
| 9 58 7 | 2 1 358 | 345 6 34 |
| 6 25 4 | 359 59 7 | 1 235 8 |
*-----------------------------------------------------------* |
Overlapping UR(18) and UR(78)...
| Code: | | MUG(178)[(2)r56c1=(9)r5c6] - (9=2)r5c7 ; r5c3<>2 |
|
The overlapping of URs has come up before, notably here in DonM's fun old "Suggest A Move" series.
Strmckr called it a MUG and it solved the puzzle in one move.
While at the time there was no one that stood up to gainsay the MUG claim. However, according to my personal notes, someone has pointed out it was not a MUG, but did not question the validity of the move.
Edit: unreferenced quote removed
Last edited by Luke451 on Tue Jun 21, 2011 4:44 pm; edited 1 time in total |
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Tue Jun 21, 2011 2:05 pm Post subject: |
|
|
Luke, I put a "?" because I am always on uncertain ground when it comes to MUGs 
My precedent for calling it a MUG would be myth jellies post here .
Clearly it could be written as a chain of URs...
| Code: | | ur(78)[(2)r56c1=(1)r5c1] - ur(18)[(27)r5c1=(9)r5c6] - (9=2)r5c7 |
|
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Tue Jun 21, 2011 3:14 pm Post subject: |
|
|
| peterj wrote: | | Luke, I put a "?" because I am always on uncertain ground when it comes to MUGs |
My offering was in response to the "?" not the move. Love the move, wish I'd spotted it myself.
"The Ultimate MUG Guide" has yet to be written, which explains my ongoing interest in all things muggy. |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Wed Jun 22, 2011 12:41 am Post subject: |
|
|
| I used a Type 4 UR (78); r56c1<>8 which exposed an XY-Wing (278); r5c8<>8. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
