| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Fri Jun 17, 2011 5:29 pm Post subject: Puzzle 11/06/17: ~ Extreme (BBDB!) |
 |
|
In my current batch of XY puzzles, I'm out of puzzles that solve with an initial M/W-Wing. This puzzle was the next one available, so I decided to post it even though XY puzzles are also available.
| Code: | +-----------------------+
| 2 . 8 | . . . | 7 . 9 |
| . . . | . 9 7 | . . . |
| 6 . 9 | 8 . . | . . . |
|-------+-------+-------|
| . . 6 | 7 8 . | . 4 . |
| . 8 . | 4 1 . | . 3 . |
| . 4 . | . . . | . 7 . |
|-------+-------+-------|
| 8 . . | . . . | 2 . 7 |
| . . . | 2 7 1 | . 8 6 |
| 1 . . | . . . | 4 9 . |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site
[Edit: corrected date of puzzle in the title.] |
|
| Back to top |
|
 |
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Sat Jun 18, 2011 7:50 am Post subject: |
|
|
Following Danny's hint on extremes, I looked for x-cycles/fish.
Here's a neat two step...
| Quote: | grouped x-cycle(5) ; (5)r5c3=r5c9 - r9c9=r9c4 - r7c456=r7c3 {loop} ; r368c3<>5, r46c9<>5
s-wing(12) (2)r5c3=r5c9 - (2=1)r4c9 - (1)r4c4=r6c3 ; r6c3<>2 |
It was also available as a one-step-almost...
| Quote: | | s-wing(12)[(2)r5c3=(1)r6c3]=(5)r4c9 - r9c9=r9c4 - r7c456=r7c3 - (5=2)r5c3 ; r6c3<>2 |
|
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Sat Jun 18, 2011 2:02 pm Post subject: |
|
|
Ole Faithful..........
| Quote: | | anp(25=1)r54c9-r4c2=(1-2)r6c3=r5c3-(2=5)r5c9; b6q179<>5 |
Ted |
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Sat Jun 18, 2011 4:22 pm Post subject: |
|
|
| tlanglet wrote: | | Ole Faithful.......... |
That'll do it! 
Often the case that an anp/ant skips some turbot/fish move. Your move is basically the m-wing complement of my s-wing uncovered by the x-cycle. Gets there quicker! |
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Sat Jun 18, 2011 6:07 pm Post subject: |
|
|
| tlanglet wrote: | Ole Faithful..........
| Quote: | | anp(25=1)r54c9-r4c2=(1-2)r6c3=r5c3-(2=5)r5c9; b6q179<>5 |
|
Ted, you're going to have to hip me to the new notation. I see four elims on (5), so one would think I'd be able to figure out what b6q179 means. Box 6, quadrant...hmmm?
| Code: | *--------------------------------------------------------------------*
| 2 3 8 | 1 45 45 | 7 6 9 |
| 45 15 145 | 6 9 7 | 38 2 38 |
| 6 7 9 | 8 23 23 | 1 5 4 |
|----------------------+----------------------+----------------------|
| 359 159 6 | 7 8 2359 | 59 4 125 |
| 7 8 25 | 4 1 69 | 69 3 25 |
| 359 4 1235 | 359 235 23569 | 5689 7 1258 |
|----------------------+----------------------+----------------------|
| 8 6 35 | 359 345 3459 | 2 1 7 |
| 3459 59 345 | 2 7 1 | 35 8 6 |
| 1 2 7 | 35 6 8 | 4 9 35 |
*--------------------------------------------------------------------*
|
|
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Sat Jun 18, 2011 8:30 pm Post subject: |
|
|
Luke,
I picked up this notation from Danny some time ago. The "b" is the normal reference to "box", and the "q" is a reference to the "cell" within the box counting left-to-right & top-to-bottom.
So, "b6q179" refers to cells r4c6, r6c7 and r6c9 respectively for three eliminations. As you noted, I failed to see the fourth elimination in r9c9. 
Ted |
|
| Back to top |
|
|
Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
|
| Posted: Sat Jun 18, 2011 11:19 pm Post subject: |
|
|
| Okay sure, thanks. I can see how that would be convenient shorthand when there's a lot of eliminations in the same box. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
