December 23, 2018

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December 23, 2018

Postby ArkieTech » Sun Dec 23, 2018 11:36 am

Code: Select all
 *-----------*
 |...|...|...|
 |.92|...|35.|
 |.5.|1.3|.6.|
 |---+---+---|
 |..3|.8.|7..|
 |...|9.4|...|
 |..6|.3.|1..|
 |---+---+---|
 |.3.|5.6|.7.|
 |.67|...|94.|
 |...|...|...|
 *-----------*


Play/Print this puzzle online
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Re: December 23, 2018

Postby Cenoman » Sun Dec 23, 2018 3:23 pm

Code: Select all
 +-------------------+-----------------+------------------+
 |  3    z17 Ba4+8-1 |  6    5    29   | A48+2  28   79   |
 |  6     9    2     |  48   47   78   |  3     5    1    |
 | y78    5    48    |  1    29   3    | x24+8  6    79   |
 +-------------------+-----------------+------------------+
 |  5     4    3     |  2    8    1    |  7     9    6    |
 | x27+8  17   18    |  9    6    4    |  5     3    28   |
 |  9     28   6     |  7    3    5    |  1     28   4    |
 +-------------------+-----------------+------------------+
 |  14    3    9     |  5    14   6    |  28    7    28   |
 |  18    6    7     |  3    12   28   |  9     4    5    |
 | x24+8  28   5     |  48   79   79   |  6     1    3    |
 +-------------------+-----------------+------------------+

BUG+5
(8)r1c3
(2-4)r1c7 = (4)r1c3
(8)r3c7|r59c1 - (8=7)r3c1 - (7=1)r1c2
=> -1 r1c3; ste
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Re: December 23, 2018

Postby 999_Springs » Sun Dec 23, 2018 5:33 pm

Code: Select all
3   17  148|6   5   29 |248 28  79
6   9   2  |48  47  78 |3   5   1
78  5   48 |1   29  3  |248 6   79
-----------+-----------+-----------
5   4   3  |2   8   1  |7   9   6
278 17  18 |9   6   4  |5   3   28
9   28  6  |7   3   5  |1   28  4
-----------+-----------+-----------
14  3   9  |5   14  6  |28  7   28
18  6   7  |3   12  28 |9   4   5
248 28  5  |48  79  79 |6   1   3
r6c2=8=r9c2-8-r9c4=8=r8c6=2=r1c6-2-r1c8=2=r6c8-2-r6c2 => -2r6c2 stte
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Re: December 23, 2018

Postby eleven » Sun Dec 23, 2018 6:31 pm

Wanted to use the 10 cell UL 28, but i would need the skyscraper 8 too, so
Code: Select all
 *--------------------------------------------------------*
 |  3     17  #148   |  6    5    29   | c248  #28   79   |
 |  6     9    2     |  48   47   78   |  3     5    1    |
 |  78    5   a48    |  1    29   3    | b248   6    79   |
 |-------------------+-----------------+------------------|
 |  5     4    3     |  2    8    1    |  7     9    6    |
 |  278   17   1-8   |  9    6    4    |  5     3    28   |
 |  9    #28   6     |  7    3    5    |  1    #28   4    |
 |-------------------+-----------------+------------------|
 |  14    3    9     |  5    14   6    |  28    7    28   |
 |  18    6    7     |  3    12   28   |  9     4    5    |
 |  248   28   5     |  48   79   79   |  6     1    3    |
 *--------------------------------------------------------*

Almost skyscraper 8r16 (8r1c3=r6c2) -> -8r5c3, fin r1c7
8r3c3 = r3c7 - 8r1c7 = skyscraper 8 => -8r5c3
(8=4)r3c3 - r3c7 = (4-8)r1c7 = skyscraper 8 => -8r5c3
[Edit: corrected, see below]
Last edited by eleven on Mon Dec 24, 2018 10:11 am, edited 1 time in total.
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Re: December 23, 2018

Postby SteveG48 » Sun Dec 23, 2018 8:43 pm

Code: Select all
 *--------------------------------------------------*
 | 3    17   148  | 6    5    9-2  | 248 a28   79   |
 | 6    9    2    | 48   47   78   | 3    5    1    |
 |e78   5    48   | 1   e29   3    | 48-2 6   e79   |
 *----------------+----------------+----------------|
 | 5    4    3    | 2    8    1    | 7    9    6    |
 |d278  17   18   | 9    6    4    | 5    3    28   |
 | 9   c28   6    | 7    3    5    | 1   b28   4    |
 *----------------+----------------+----------------|
 | 14   3    9    | 5    14   6    | 28   7    28   |
 | 18   6    7    | 3    12   28   | 9    4    5    |
 | 248  28   5    | 48   79   79   | 6    1    3    |
 *--------------------------------------------------*


2r1c8 = r6c8 - r6c2 = (2-7)r5c1 = (279)r3c159c3 => -2 r1c6,r3c7 ; stte
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Re: December 23, 2018

Postby Cenoman » Sun Dec 23, 2018 10:22 pm

eleven wrote:Wanted to use the 10 cell UL 28, but i would need the skyscraper 8 too, so
Code: Select all
 *--------------------------------------------------------*
 |  3     17  #148   |  6    5    29   | c248  #28   79   |
 |  6     9    2     |  48   47   78   |  3     5    1    |
 |  78    5   a48    |  1    29   3    | b248   6    79   |
 |-------------------+-----------------+------------------|
 |  5     4    3     |  2    8    1    |  7     9    6    |
 |  278   17   1-8   |  9    6    4    |  5     3    28   |
 |  9    #28   6     |  7    3    5    |  1    #28   4    |
 |-------------------+-----------------+------------------|
 |  14    3    9     |  5    14   6    |  28    7    28   |
 |  18    6    7     |  3    12   28   |  9     4    5    |
 |  248   28   5     |  48   79   79   |  6     1    3    |
 *--------------------------------------------------------*

Almost skyscraper 8r16 (8r1c3=r6c2) -> -8r5c3, fin r1c7
8r3c3 = r3c7 - 8r1c7 = skyscraper 8 => -8r5c3


Hi eleven,
I feel uneasy with your chain. I can't see what is done with 8r3c1. To me your first link should read 8r3c13 = r3c7.... , but then r3c13 is not seen by r5c3. What am I interpreting wrong ?

I also wanted to use the 10-cell DP(28) . It's feasible but not so easy. Here is what I found:
Hidden Text: Show
Code: Select all
 +---------------------+-----------------+------------------+
 |  3      c17   148   |  6    5   d29   |  248* C28* d79   |
 |  6       9    2     |  48   47   78   |  3     5    1    |
 |Bb78      5   B48    |  1    29   3    |Ba4+28  6    79   |
 +---------------------+-----------------+------------------+
 |  5       4    3     |  2    8    1    |  7     9    6    |
 | A28+7*   17   18    |  9    6    4    |  5     3    28*  |
 |  9      E28*  6     |  7    3    5    |  1    D28*  4    |
 +---------------------+-----------------+------------------+
 |  14      3    9     |  5    14   6    |  28*   7    28*  |
 |  18      6    7     |  3    12  e28   |  9     4    5    |
 | f8+4-2* F28*  5     | e48   79   79   |  6     1    3    |
 +---------------------+-----------------+------------------+

10-cell DP(28)r1c78, b4p48, b6p68, r7c79, r9c12 (*); guardians (mixed externals internals) 2r3c7(#), 8r3c7(a), 7r5c1(A), 4r9c1(^)
(8)r3c7 - (8=7)r3c1 - r1c2 = (79-2)r1c69 = (28-4)b8p67 = (4^)r9c1
(7)r5c1 - (748=2#)r3c137 - r1c8 = r6c8 - r6c2 = (2)r9c2
=> -2 r9c1; ste
Something shorter is likely to exist...
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Re: December 23, 2018

Postby SpAce » Mon Dec 24, 2018 1:18 am

eleven wrote:Almost skyscraper 8r16 (8r1c3=r6c2) -> -8r5c3, fin r1c7
8r3c3 = r3c7 - 8r1c7 = skyscraper 8 => -8r5c3

Hi eleven! Like Cenoman, I can't see how that works as written. Did you mean something like this:

(8=4)r3c3 - r3c7 = (4-8)r1c7 = skyscraper 8 => -8r5c3 ?
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Re: December 23, 2018

Postby eleven » Mon Dec 24, 2018 10:10 am

Oops, that's exactly what i had. And then i thought, i could shorten the chain ...
Thanks.
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Re: December 23, 2018

Postby SpAce » Mon Dec 24, 2018 11:53 am

eleven wrote:Oops, that's exactly what i had. And then i thought, i could shorten the chain ...

That's what I thought had to have happened. Been there, done that, and probably will again :)
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