| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Fri Apr 24, 2009 12:09 pm Post subject: Set XY_02 Puzzle 57 -- Advanced |
 |
|
| Code: | +-----------------------+
| . . 3 | 2 . 8 | 1 . 7 |
| . 5 . | 6 . . | . . . |
| 1 . 8 | 4 . . | . . . |
|-------+-------+-------|
| 7 1 5 | . 4 . | . 2 . |
| . . . | 7 9 . | . . . |
| 4 . . | . . 2 | . 7 . |
|-------+-------+-------|
| 3 . . | . . . | 5 . 4 |
| . . . | 3 . 4 | . 8 . |
| 8 . . | . . . | 3 . 9 |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site
===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings are Accumulative
Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH: BUG+1, UR Type 1, X-Wing, XY-Wing
VH+: 2-String Kite, Empty Rectangle, Remote Pair, Skyscraper, finned X-Wing, UR Type 2
Advanced: M-Wing, W-Wing, XYZ-Wing, XY-Chain, other URs
Extreme: Chain, Loop, SIN (Single Inference Network) |
|
| Back to top |
|
 |
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
| Posted: Sat Apr 25, 2009 12:13 am Post subject: |
|
|
this is the grid after 2 xy-wings, {3,6,8}
and {2,4,9}
| Code: | .---------------.---------------.---------------.
| 6 4 3 | 2 5 8 | 1 9 7 |
| 9 5 27 | 6 137 C13 | 24 D34 8 |
| 1 27 8 | 4 37 9 | 26 35 56 |
:---------------+---------------+---------------:
| 7 1 5 | 8 4 6 | 9 2 3 |
| 2 A38 6 | 7 9 B135 |F4-8 E45 15 |
| 4 38 9 | 15 13 2 | 68 7 156 |
:---------------+---------------+---------------:
| 3 267 27 | 9 8 17 | 5 16 4 |
| 5 9 1 | 3 6 4 | 7 8 2 |
| 8 67 4 | 15 2 157 | 3 16 9 |
'---------------'---------------'---------------' |
(8=3)A - (3)B = (3)C - (3=4)D - (4)E = (4)F; F is not 8 |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Sun Apr 26, 2009 1:02 am Post subject: |
|
|
| A four-stepper. XY (683), XY (368), XYZ (247) and XY (137) with pincer transport. |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Mon Apr 27, 2009 3:29 pm Post subject: |
|
|
I also had a four stepper using moves similar to some already posted.
xy-wing 279,
xy-wing 368,
xy-wing 249,
xy-wing 137 with pincer transport.
Ted |
|
| Back to top |
|
|
wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
|
| Posted: Mon Apr 27, 2009 6:20 pm Post subject: |
|
|
I was doing a four stepper with a 4 cell xy-chain.
Looking at your comments I found the pincer transport was at the same markup as my 4-cell chain.
That makes it a 3 stepper, you both have an unneeded xy-wing, as I see it.
 |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Tue Apr 28, 2009 1:40 am Post subject: |
|
|
| wapati wrote: | That makes it a 3 stepper, you both have an unneeded xy-wing, as I see it.
|
I frequently have unneeded steps but the fun remains..........
Ted |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Tue Apr 28, 2009 2:16 am Post subject: |
|
|
For many, the enjoyment is in finding the fewest number of steps. For others, the enjoyment is in the trip and not how quickly they get to their destination.
For the latter group, I've been toying with the idea of posting Advanced puzzles where you may only post a solution with N-Plus steps (or more) ... where I determine "N" based on my solver's solution.
Anyone interested  |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Tue Apr 28, 2009 3:01 am Post subject: |
|
|
| daj95376 wrote: | For many, the enjoyment is in finding the fewest number of steps. For others, the enjoyment is in the trip and not how quickly they get to their destination.
For the latter group, I've been toying with the idea of posting Advanced puzzles where you may only post a solution with N-Plus steps (or more) ... where I determine "N" based on my solver's solution.
Anyone interested |
My normal sequence always seems to be a long road. Sometimes I take the time and effort to eliminate some of the unnecessary steps.
Yes, I think that your suggestion would be interesting as an infrequent approach, but a steady diet would not be fun. The unique solution or the shortest solution is still my goal, given that I can find any solution.
Ted |
|
| Back to top |
|
|
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
| Posted: Wed Apr 29, 2009 3:09 am Post subject: |
|
|
| Quote: | | For the latter group, I've been toying with the idea of posting Advanced puzzles where you may only post a solution with N-Plus steps (or more) ... where I determine "N" based on my solver's solution. |
and...
| Quote: | | Yes, I think that your suggestion would be interesting as an infrequent approach, but a steady diet would not be fun |
adding extra steps might be a fun way to achieve a particular grid.
remember when we were asked to find the BUG+2 grid? having a goal may be the justification needed to add extra steps.
also...
if there isn't a limit to how many more steps we can add, then I think we all know that the thread may never end.  |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Wed Apr 29, 2009 3:51 am Post subject: |
|
|
| My tendency is to play any move that I happen to spot. I often take more moves than others do, but it's never been my goal to solve in as few steps as possible. Just looking to enjoy the puzzles. |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Wed Apr 29, 2009 4:39 am Post subject: |
|
|
| I think this idea should just stay that -- an idea. I don't see a practical way to implement a minimal number of steps. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
