November 2, 2019

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November 2, 2019

Postby ArkieTech » Sat Nov 02, 2019 10:36 am

Code: Select all
 *-----------*
 |..1|...|94.|
 |84.|..7|..5|
 |.9.|.6.|...|
 |---+---+---|
 |2..|..4|8..|
 |6..|..9|75.|
 |...|6.3|...|
 |---+---+---|
 |..6|1..|..7|
 |3..|7..|.61|
 |...|.46|5..|
 *-----------*

 ..1...94.84...7..5.9..6....2....48..6....975....6.3.....61....73..7...61....465..



Play/Print this puzzle online
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Re: November 2, 2019

Postby SpAce » Sat Nov 02, 2019 11:41 am

Code: Select all
.-------------------.-----------------------.-----------------------.
| 7   6       1     |  38-2   2358    b258  |    9      4    c{2}3  |
| 8   4       23    |  239    239      7    |    6      1      5    |
| 5   9       23    |  4      6        1    |   b3-2    7      8    |
:-------------------+-----------------------+-----------------------:
| 2   13      79    |  5      17       4    |    8      39     6    |
| 6   13    de4(8)  | e8(2)   128      9    |    7      5     c34   |
| 49  578     578   |  6      78       3    |    1      29     249  |
:-------------------+-----------------------+-----------------------:
| 49  258     6     |  1      23589  a[2]58 |   a[2]34  389-2  7    |
| 3   58-2  e(4)589 |  7      589-2  a[2]58 | ae([2])4  6      1    |
| 1   278     789   |  389-2  4        6    |     5     389-2  39-2 |
'-------------------'-----------------------'-----------------------'

(2)r78c6&7 = r1c6|r3c7 - {2=34)r15c9 - (4)r5c3 = (82}r5c34&(42)r8c37 => -2 {r1c4},r3c7,r7c8,r8c25,r9c489; stte

Added. A bit cleaner version, perhaps:

Code: Select all
.------------------.------------------------.------------------------.
| 7   6      1     |  238    2358    b258#  |   9        4     c23   |
| 8   4      23    |  239    239      7     |   6        1      5    |
| 5   9      23    |  4      6        1     |  b23#      7      8    |
:------------------+------------------------+------------------------:
| 2   13     79    |  5      17       4     |   8        39     6    |
| 6   13   de4(8)  | e8(2)   128      9     |   7        5     c34   |
| 49  578    578   |  6      78       3     |   1        29     249  |
:------------------+------------------------+------------------------:
| 49  258    6     |  1      23589  a[2]58* |   a[2]34*  389-2  7    |
| 3   258  e(4)589 |  7      2589   a[2]58* | ae([2])4*  6      1    |
| 1   278    789   |  389-2  4        6     |     5      389-2  39-2 |
'------------------'------------------------'------------------------'

Kraken Franken X-Wing:

(2)C67\b89 = r1c6|r3c7 - (2=34)r15c9 - (4)r5c3 = (82)r5c34&(42)r8c37 => -2 r7c8,r9c489; stte

--
Edits 1,2. As per Steve's and eleven's comments below, I tried to clarify the eliminations a bit. Also added -2r8c2, thanks to eleven!
Edits 3-5. Added and fixed the Franken X-Wing version.
Last edited by SpAce on Sun Nov 03, 2019 12:01 am, edited 5 times in total.
-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: November 2, 2019

Postby eleven » Sat Nov 02, 2019 2:45 pm

Don't see -2r1c4, but -2r8c2.

Code: Select all
 *------------------------------------------------------------------*
 |  7    6     1      |  238    2358   *258   |  9     4     d23    |
 |  8    4     23     |  239    239     7     |  6     1      5     |
 |  5    9     23     |  4      6       1     | c23    7      8     |
 |--------------------+-----------------------+---------------------|
 |  2    13   a79     |  5      17      4     |  8    a39     6     |
 |  6    13    48     |  28     128     9     |  7     5      4-3   |
 |  49   58+7  578    |  6      78      3     |  1     29     249   |
 |--------------------+-----------------------+---------------------|
 |  49  #258   6      |  1      23589  #258   | b234   2389   7     |
 |  3   #258   4589   |  7      2589   #258   | b24    6      1     |
 |  1    278   789    |  2389   4       6     |  5     2389   239   |
 *------------------------------------------------------------------*

Kraken:
7r6c2 - (7=93)r4c38
x-wing 2r78c26 - (2=43)r78c7 - r3c7 = r1c9
2r1c6 - (2=3)r1c9
=> -3r5c9; stte
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Re: November 2, 2019

Postby Ngisa » Sat Nov 02, 2019 4:44 pm

Code: Select all
+-------------------+---------------------+---------------------+
| 7     6      1    | 238    2358     258 | 9      4       d23  |
| 8     4      23   | 239    239      7   | 6      1        5   |
| 5     9      23   | 4      6        1   | 3-2    7        8   |
+-------------------+---------------------+---------------------+
| 2     13     79   | 5      17       4   | 8      39       6   |
| 6     13    c48   | 28     128      9   | 7      5       d34  |
| 49    578    578  | 6      78       3   | 1      29       249 |
+-------------------+---------------------+---------------------+
| 49    258    6    | 1      23589    258 | 234    2389     7   |
| 3     258   b4589 | 7      2589     258 |a24     6        1   |
| 1     278    789  | 2389   4        6   | 5      2389     39-2|
+-------------------+---------------------+---------------------+

2=4)r8c7 - r8c3 = r5c3 - (4=32)r51c9 => - 2r2c7,r9c9; btte

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Re: November 2, 2019

Postby SteveG48 » Sat Nov 02, 2019 5:05 pm

Code: Select all
 *--------------------------------------------------------------------*
 | 7      6      1      | 238    2358   258    | 9      4      23     |
 | 8      4      23     | 239    239    7      | 6      1      5      |
 | 5      9      23     | 4      6      1      | 23     7      8      |
 *----------------------+----------------------+----------------------|
 | 2      13   ab79     | 5      17     4      | 8     b39     6      |
 | 6      13     48     | 28     128    9      | 7      5      34     |
 | 4-9    578    578    | 6      78     3      | 1     b29     249    |
 *----------------------+----------------------+----------------------|
 |f49     258    6      | 1     f23589  258    |e234  ce2389   7      |
 | 3      258    458-9  | 7      2589   258    | 24     6      1      |
 | 1      278  cd78-9   | 2389   4      6      | 5    cd2389  d239    |
 *--------------------------------------------------------------------*


9r4c3 = 7r4c3&(29)r46c8 - (2|9)r79c8|7r9c3 = (839)r9c389 - (3|9)r7c78 = (39)r7c15 => -9 r6c1,r89c3 ; stte
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Re: November 2, 2019

Postby SteveG48 » Sat Nov 02, 2019 6:32 pm

SpAce wrote:
Code: Select all
.------------------.------------------------.-----------------------.
| 7   6      1     |   38-2   2358    b258  |    9      4    c{2}3  |
| 8   4      23    |   239    239      7    |    6      1      5    |
| 5   9      23    |   4      6        1    |   b3-2    7      8    |
:------------------+------------------------+-----------------------:
| 2   13     79    |   5      17       4    |    8      39     6    |
| 6   13   de4(8)  | e(82)    128      9    |    7      5     c34   |
| 49  578    578   |   6      78       3    |    1      29     249  |
:------------------+------------------------+-----------------------:
| 49  258    6     |   1      23589  a[2]58 |   a[2]34  389-2  7    |
| 3   258  e(4)589 |   7      589-2  a[2]58 | ae([2]4)  6      1    |
| 1   278    789   |   389-2  4        6    |    5      389-2  39-2 |
'------------------'------------------------'-----------------------'

(2)r78c6&7 = r1c6|r3c7 - (2=34)r15c9 - (4)r5c3 = (82)r5c34&(42)r8c37 => -2 r7c8,r8c5,r9c489,{r1c4,r3c7}; stte



Hi, SpAce. Another solution of twisty beauty, but I don't see -2 r1c4. Also, why the braces?
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Re: November 2, 2019

Postby SpAce » Sat Nov 02, 2019 8:42 pm

Hi Steve and eleven,

SteveG48 wrote:Hi, SpAce. Another solution of twisty beauty,

Thanks! Yours as well. Took me a while to see how the second strong link worked, and I liked it!

but I don't see -2 r1c4. Also, why the braces?

The subchain (2r1c9==2r5c3) supposedly kills 2r1c4, and the braces around the elimination(s) and the extra endpoint 2r1c9 were meant to depict that. Obviously they did a poor job; sorry about that! I didn't want to ruin the chain with elaborate subchain markings since those weren't essential eliminations anyway. Also, it seems that I braced the r3c7 unnecessarily as it's eliminated by the normal endpoints too (like r9c9). Should have been just {r1c4}. I could have left it out as well, but it was kind of fun to get so many eliminations at once without a loop.

eleven wrote:Don't see -2r1c4, but -2r8c2.

How do you get -2r8c2 with those endpoints? As far as I see, only the 2r8c7 has a line of sight to it.
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Re: November 2, 2019

Postby eleven » Sat Nov 02, 2019 9:06 pm

SpAce wrote:The subchain (2r1c9==2r5c3) supposedly kills 2r1c4

Ah, i missed that. Hard to to see in that compact notation.
How do you get -2r8c2 with those endpoints? As far as I see, only the 2r8c7 has a line of sight to it.

x-wing (or locked candidates, if you like) 2r78c67 = ... = 2r8c7
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Re: November 2, 2019

Postby SpAce » Sat Nov 02, 2019 10:03 pm

eleven wrote:x-wing (or locked candidates, if you like) 2r78c67 = ... = 2r8c7

Of course, I was blind! Thanks!

This also made me realize that the essential eliminations are easiest to present with a Kraken Franken X-Wing. Now added.
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