January 17, 2019

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January 17, 2019

Postby ArkieTech » Thu Jan 17, 2019 12:15 pm

Code: Select all
 *-----------*
 |8.4|...|..2|
 |..6|54.|...|
 |...|.86|.54|
 |---+---+---|
 |732|...|...|
 |..8|.1.|7..|
 |...|...|235|
 |---+---+---|
 |46.|85.|...|
 |...|.29|3..|
 |2..|...|5.7|
 *-----------*


Play/Print this puzzle online
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Re: January 17, 2019

Postby SpAce » Thu Jan 17, 2019 1:14 pm

Code: Select all
.--------------.---------------.-----------------.
| 8  5     4   | 379   39  137 |   6    c179  2  |
| 9  127   6   | 5     4   127 |   8    c17   3  |
| 3  127   7-1 | 279   8   6   | d(1)9   5    4  |
:--------------+---------------+-----------------:
| 7  3     2   | 69    69  5   |   4    c18   18 |
| 5  4     8   | 23    1   23  |   7     69   69 |
| 6  19  a(1)9 | 4     7   8   |   2     3    5  |
:--------------+---------------+-----------------:
| 4  6     37  | 8     5   37  |   19    2    19 |
| 1  78    5   | 67    2   9   |   3     4    68 |
| 2  89   a39  | 1    b36  4   |   5    b68   7  |
'--------------'---------------'-----------------'

(1=93)r69c3 - (3=68)r9c58 - (8=179)r421c8 - (9=1)r3c7 => -1 r3c3; stte
-SpAce-: Show
Code: Select all
   *             |    |               |    |    *
        *        |=()=|    /  _  \    |=()=|               *
            *    |    |   |-=( )=-|   |    |      *
     *                     \  ¯  /                   *   

"If one is to understand the great mystery, one must study all its aspects, not just the dogmatic narrow view of the Jedi."
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Re: January 17, 2019

Postby rjamil » Thu Jan 17, 2019 2:00 pm

Code: Select all
8.4.....2..654........86.54732........8.1.7........23546.85........293..2.....5.7
 +------------+------------------+-------------+
 | 8  5    4  | (379)  (39)  137 | 6   179  2  |
 | 9  127  6  | 5      4     127 | 8   17   3  |
 | 3  127  17 | 27-9   8     6   | 19  5    4  |
 +------------+------------------+-------------+
 | 7  3    2  | (69)   69    5   | 4   18   18 |
 | 5  4    8  | 23     1     23  | 7   69   69 |
 | 6  19   19 | 4      7     8   | 2   3    5  |
 +------------+------------------+-------------+
 | 4  6    37 | 8      5     37  | 19  2    19 |
 | 1  78   5  | (67)   2     9   | 3   4    68 |
 | 2  89   39 | 1      36    4   | 5   68   7  |
 +------------+------------------+-------------+

WXYZ-Wing: 3679 @ r148c4, r1c5 => -9 r3c4; stte

Note: Above mentioned one trick pony found by omitting Skyscraper, 2-String Kite and Empty Rectangle moves.

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Re: January 17, 2019

Postby SteveG48 » Thu Jan 17, 2019 2:08 pm

Code: Select all
 *--------------------------------------------------*
 | 8    5    4    | 379  39   137  | 6    179  2    |
 | 9    127  6    | 5    4    127  | 8    17   3    |
 | 3    127 c17   |d279  8    6    | 19   5    4    |
 *----------------+----------------+----------------|
 | 7    3    2    |d69   69   5    | 4    18   18   |
 | 5    4    8    |d23   1    2-3  | 7    69   69   |
 | 6    19   19   | 4    7    8    | 2    3    5    |
 *----------------+----------------+----------------|
 | 4    6   b37   | 8    5  ac37   | 19   2    19   |
 | 1    78   5    |d67   2    9    | 3    4    68   |
 | 2    89   39   | 1    36   4    | 5    68   7    |
 *--------------------------------------------------*


3r7c6 = (3-7)r7c3 = (7r3c3)&(7r7c6) - (7=2369)r3458c4 => -3 r5c6 ; stte
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Re: January 17, 2019

Postby SteveG48 » Thu Jan 17, 2019 2:16 pm

Nice one, R. Jamil.
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Re: January 17, 2019

Postby Cenoman » Thu Jan 17, 2019 3:26 pm

Withdrawn.
(Senseless solution)
Last edited by Cenoman on Thu Jan 17, 2019 10:23 pm, edited 1 time in total.
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Re: January 17, 2019

Postby Ngisa » Thu Jan 17, 2019 3:41 pm

Code: Select all
+----------------+--------------------+------------------+
| 8    5      4  |a379     a39    137 | 6     b179    2  |
| 9    127    6  | 5        4     127 | 8      17     3  |
| 3    127    17 | 279      8     6   | 19     5      4  |
+----------------+--------------------+------------------+
| 7    3      2  | 69       69    5   | 4      18     18 |
| 5    4      8  | 23       1     23  | 7     c69     69 |
| 6    19     19 | 4        7     8   | 2      3      5  |
+----------------+--------------------+------------------+
| 4    6      37 | 8        5     37  | 19     2      19 |
| 1    78     5  |f6-7      2     9   | 3      4     e68 |
| 2    89     39 | 1        36    4   | 5     d68     7  |
+----------------+--------------------+------------------+

(7=39)r1c45 - (9)r1c8 = (9-6)r5c8 = r9c8 - r8c9 = (6)r8c4 => - 7r8c4; stte

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Re: January 17, 2019

Postby SpAce » Thu Jan 17, 2019 7:14 pm

Cenoman wrote:DP(17)r123c268 (BUG-lite) using externals

Hmm. Can you elaborate? I don't see a BUG-Lite there. Why not use the simple UR anyway?

Code: Select all
.--------------.------------------.----------------.
| 8  5     4   | 379  39   17+3   |  6    17+9  2  |
| 9  127   6   | 5    4    17+2   |  8    17+   3  |
| 3  127  b17  | 279  8    6      | a9#1  5     4  |
:--------------+------------------+----------------:
| 7  3     2   | 69   69   5      |  4    18    18 |
| 5  4     8   | 23   1    23     |  7    69    69 |
| 6  19    19  | 4    7    8      |  2    3     5  |
:--------------+------------------+----------------:
| 4  6   b(3)7 | 8    5   a#(7)-3 |  19   2     19 |
| 1  78    5   | 67   2    9      |  3    4     68 |
| 2  89    39  | 1    36   4      |  5    68    7  |
'--------------'------------------'----------------'

UR[17]r12c68 using externals

(7=UR=1)r7c6,r3c7 - (1=73)r37c3 => -3 r7c6; stte
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Re: January 17, 2019

Postby rjamil » Thu Jan 17, 2019 7:33 pm

SteveG48 wrote:Nice one, R. Jamil.

Many thanks for the appreciation.

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Re: January 17, 2019

Postby Cenoman » Thu Jan 17, 2019 10:20 pm

SpAce wrote:Hmm. Can you elaborate? I don't see a BUG-Lite there. Why not use the simple UR anyway?


Hi SpAce,
You are right. There is no BUG-lite in cells r123c268, just the UR you mention. What was I thinking ???
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Re: January 17, 2019

Postby SpAce » Thu Jan 17, 2019 10:49 pm

Cenoman wrote:You are right. There is no BUG-lite in cells r123c268, just the UR you mention. What was I thinking ???

Thanks for confirming that. I guess both of us suffered from blindness today, as I didn't see the UR (or its potential) until I saw your post. As usual, I did a quick scan for DP possibilities first but totally missed this one. Too bad, because it's pretty nice -- but if it's ok for you, we can share credit for it!
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Re: January 17, 2019

Postby SpAce » Thu Jan 17, 2019 10:52 pm

SteveG48 wrote:Nice one, R. Jamil.

Yes, it is!
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Re: January 17, 2019

Postby rjamil » Fri Jan 18, 2019 4:45 am

SpAce wrote:
SteveG48 wrote:Nice one, R. Jamil.

Yes, it is!

Thanks for the complements!!!

Please note that the same move may also be achieved in Andrew's Solver by unticking Simple Colouring, X-Cycles, XY-Chain, 3D Medusa and Hidden Unique Rect's moves.

Another moves that may also eliminate 9 from r3c4 are "Aligned Pair Exclusion" with r13c4, or "Almost Locked Sets" and "Death Blossom" with same WXYZ-Wing cells; stte.

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