| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Sat Oct 30, 2010 5:31 pm Post subject: Puzzle 10/10/31: A14 Advanced |
 |
|
I'm hanging up my hat on posting puzzles. Today's puzzles are the last.
| Code: | +-----------------------+
| 4 . . | 3 . . | . 7 . |
| . 8 . | . . . | . . . |
| . . 3 | . 1 . | 8 . . |
|-------+-------+-------|
| 7 . . | . 2 1 | . 6 4 |
| . . 2 | 7 3 . | . 1 . |
| . . . | 6 . . | . 8 . |
|-------+-------+-------|
| . . 7 | . . 2 | 1 3 . |
| . . . | 9 7 3 | 6 2 . |
| . . . | . . . | . . . |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Tue Nov 02, 2010 5:23 pm Post subject: |
|
|
Two turbot moves...
| Quote: | kite(8) r5, c4 ; r7c1<>8 with transport - (8)r7c9=r8c9 ; r8c1<>8
skyscraper(5) c4, c8 ; r9c5<>5, r7c9<>5 |
|
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Wed Nov 03, 2010 3:33 am Post subject: |
|
|
| Five moves, including what I think was a Sashimi X-Wing. If it was, it's my first. |
|
| Back to top |
|
|
lorne
Joined: 22 Nov 2010
Posts: 5
|
| Posted: Tue Dec 07, 2010 3:43 am Post subject: Name of Technique |
|
|
Hi all,
In solving this puzzle, I used a coloring technique where 2 values of 8 of the same color could see the only 2 remaining candidates for 8 in a square (r7c9, r8c9). If this color were true, it would negate all 8's from the square. Because the square must contain at least one value of 8, this enabled me to eliminate all values of 8 with this color. I was wondering if there was a formal name for this technique?
Regards, and thnx in advance for any info. you can provide,
Lorne |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Tue Dec 07, 2010 5:48 am Post subject: |
|
|
Started at this point ...
| Code: | +-----------------------------------------------------------------------+
| 4 2569 569 | 3 5689 5689 | 259 7 1 |
| 12569 8 1569 | 245 4569 7 | 2459 459 3 |
| 259 7 3 | 245 1 459 | 8 459 6 |
|-----------------------+-----------------------+-----------------------|
| 7 59 589 | 58 2 1 | 3 6 4 |
| 68 46 2 | 7 3 48 | 59 1 59 |
| 135 1345 145 | 6 459 459 | 7 8 2 |
|-----------------------+-----------------------+-----------------------|
| 5689 569 7 | 458 4568 2 | 1 3 589 |
| 158 145 1458 | 9 7 3 | 6 2 58 |
| 23 23 5689 | 1 568 568 | 459 459 7 |
+-----------------------------------------------------------------------+
# 91 eliminations remain
|
... there is a 2-String Kite in r5+c4 that performs r7c1<>8.
| Code: | +-----------------------------------+
| . . . | . 8 8 | . . . |
| . 8 . | . . . | . . . |
| . . . | . . . | 8 . . |
|-----------+-----------+-----------|
| . . 8 | 8# . . | . . . |
| 8* . . | . . 8* | . . . |
| . . . | . . . | . 8 . |
|-----------+-----------+-----------|
| -8 . . | 8# 8 . | . . 8 |
| 8 . 8 | . . . | . . 8 |
| . . 8 | . 8 8 | . . . |
+-----------------------------------+
|
This exposes a Multiple Colors move where the Blue cells are eliminated because they see the Pink & Amber cells.
| Code: | +-----------------------------------+
| . . . | . 8 8 | . . . |
| . 8 . | . . . | . . . |
| . . . | . . . | 8 . . |
|-----------+-----------+-----------|
| . . 8B | 8G . . | . . . |
| 8G . . | . . 8B | . . . |
| . . . | . . . | . 8 . |
|-----------+-----------+-----------|
| . . . | 8B 8 . | . . 8P |
| 8B . 8 | . . . | . . 8A |
| . . 8 | . 8 8 | . . . |
+-----------------------------------+
|
|
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Tue Dec 07, 2010 11:23 am Post subject: Re: Name of Technique |
|
|
| lorne wrote: | | I was wondering if there was a formal name for this technique? |
I always thought it was called a "multi-colour wrap".
I played effectively the same elimination as a "kite with transport" (through block 9) in the original puzzle. |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Tue Dec 07, 2010 5:05 pm Post subject: |
|
|
| Quote: | | I played effectively the same elimination as a "kite with transport" |
Which, of course, might be described as basic "Multi-coloring", although your phrase is very descriptive and not subject to misinterpretation. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
