| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Sun Jul 17, 2011 3:56 pm Post subject: Puzzle 11/07/17: ~ Advanced |
 |
|
| Code: | +-----------------------+
| . . . | 7 . 9 | . . 3 |
| . 3 . | 1 4 6 | . 2 . |
| . . . | . . 8 | 1 . . |
|-------+-------+-------|
| 2 6 . | . . . | 3 . . |
| . 8 . | . 9 . | 7 . 2 |
| 9 1 3 | . . 2 | 5 8 6 |
|-------+-------+-------|
| . . 1 | 9 6 4 | 2 . . |
| . 9 . | . . 5 | . 3 . |
| 6 . . | . 3 7 | . . . |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Mon Jul 18, 2011 2:42 pm Post subject: |
|
|
Another opportunity to conjurer up an unusual step totally inconsistent with the rated level of the puzzle, but great fun.
Kraken fin x-wing (5)r23c19 with fin (5)r5c1; r3c235<>5
x-wing (5)r23c19=(5)r5c1[-(5)r23c1*]-(5=4)r5c3-(4=28)r8c34-(8=47)r83*c1-(57=8)r2c1*-(89=5)r2c73-r2c9=r3c9;
A Type 2 UR(28)r89c34; r5c3<>4=5 completes the puzzle.
[Note that my "funny" notation is an attempt at notating memory for later usage.]
Ted |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Mon Jul 18, 2011 5:04 pm Post subject: |
|
|
Ted, this is strictly a FWIW comment!!!
I'm not aware of any standard for listing chains with memory. However, my preference is to flag the value. First by marking it on the right side when it's to be remembered, and then on the left side when it's reused later. As such:
x-wing(5)r23c19=(5*)r5c1-(5=4)r5c3-(4=28)r8c34-(*58=47)r83c1-(*57=8)r2c1-(89=5)r2c73-r2c9=r3c9;
FYI, your chain without memory:
x-wing(5)r23c19=(5)r5c1-(5=4)r5c3-(4=28)r8c34-(8)r8c1=(8-7)r2c1=(7-5)r2c9=(5)r3c9;
Regards, Danny |
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Mon Jul 18, 2011 5:15 pm Post subject: |
|
|
| tlanglet wrote: | Another opportunity to conjurer up an unusual step totally inconsistent with the rated level of the puzzle, but great fun.
Kraken fin x-wing (5)r23c19 with fin (5)r5c1; r3c235<>5
x-wing (5)r23c19=(5)r5c1[-(5)r23c1*]-(5=4)r5c3-(4=28)r8c34-(8=47)r83*c1-(57=8)r2c1*-(89=5)r2c73-r2c9=r3c9;
A Type 2 UR(28)r89c34; r5c3<>4=5 completes the puzzle.
[Note that my "funny" notation is an attempt at notating memory for later usage.]
Ted |
Hi, Ted. With 8s conjugate c1 you can get by without memory usage.
| Code: | *--------------------------------------------------------------------*
| 1 245 24568 | 7 25 9 | 48 46 3 |
| 578 3 589 | 1 4 6 | 89 2 579 |
| 457 2457 24569 | 3 25 8 | 1 4679 4579 |
|----------------------+----------------------+----------------------|
| 2 6 7 | 5 8 1 | 3 49 49 |
| 45 8 45 | 6 9 3 | 7 1 2 |
| 9 1 3 | 4 7 2 | 5 8 6 |
|----------------------+----------------------+----------------------|
| 3 57 1 | 9 6 4 | 2 57 8 |
| 478 9 248 | 28 1 5 | 6 3 47 |
| 6 245 2458 | 28 3 7 | 49 459 1 |
*--------------------------------------------------------------------* |
Using your chain, you can forego the the x-wing as well, which leaves the UR to take it home.
(5=89)r2c37-(8)r2c1=r8c1-(8=24)r8c34-(4=5)r5c3 =>r139c3<>5
Signed,
Luke The Fun Killer  |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Mon Jul 18, 2011 9:12 pm Post subject: |
|
|
| Luke451 wrote: |
Hi, Ted. With 8s conjugate c1 you can get by without memory usage.
| Code: | *--------------------------------------------------------------------*
| 1 245 24568 | 7 25 9 | 48 46 3 |
| 578 3 589 | 1 4 6 | 89 2 579 |
| 457 2457 24569 | 3 25 8 | 1 4679 4579 |
|----------------------+----------------------+----------------------|
| 2 6 7 | 5 8 1 | 3 49 49 |
| 45 8 45 | 6 9 3 | 7 1 2 |
| 9 1 3 | 4 7 2 | 5 8 6 |
|----------------------+----------------------+----------------------|
| 3 57 1 | 9 6 4 | 2 57 8 |
| 478 9 248 | 28 1 5 | 6 3 47 |
| 6 245 2458 | 28 3 7 | 49 459 1 |
*--------------------------------------------------------------------* |
Using your chain, you can forego the the x-wing as well, which leaves the UR to take it home.
(5=89)r2c37-(8)r2c1=r8c1-(8=24)r8c34-(4=5)r5c3 =>r139c3<>5
Signed,
Luke The Fun Killer |
Luke, you will never be a Fun Killer for two reasons:
1) It is not in your happy nature, and
2) I am having too much fun abusing Danny's wonderful puzzles by solving them is strange ways.
Plus, I enjoy and learn from all the feedback I receive; keep it coming.
Ted |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Mon Jul 18, 2011 9:20 pm Post subject: |
|
|
| daj95376 wrote: | Ted, this is strictly a FWIW comment!!!
I'm not aware of any standard for listing chains with memory. However, my preference is to flag the value. First by marking it on the right side when it's to be remembered, and then on the left side when it's reused later. As such:
x-wing(5)r23c19=(5*)r5c1-(5=4)r5c3-(4=28)r8c34-(*58=47)r83c1-(*57=8)r2c1-(89=5)r2c73-r2c9=r3c9;
Regards, Danny |
Danny, thanks for the suggestion about memory notation. I like it, I like it very much! It is simple and non-invasive. It does leave it up to the reviewer to interpret the memory location in some cases but I would not think that is a significant issue. In the rare cases where the chain could have more than one memory concern, multiple * could be used.
Thanks for another notation suggestion.
Ted  |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Thu Jul 21, 2011 4:37 am Post subject: |
|
|
I played a Finned X-Wing; r3c1<>7, but subsequently found out an actual X-Wing was there.
Four-cell XY-Chain; r8c1<>7 |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
