August 31, 2018

Post puzzles for others to solve here.

August 31, 2018

Postby ArkieTech » Fri Aug 31, 2018 10:44 am

Code: Select all
 *-----------*
 |9..|.4.|...|
 |.7.|.3.|9..|
 |5..|9.8|.17|
 |---+---+---|
 |83.|2..|.9.|
 |.9.|...|.7.|
 |.6.|..5|.32|
 |---+---+---|
 |35.|7.9|..6|
 |..7|.5.|.2.|
 |...|.1.|..3|
 *-----------*


Play/Print this puzzle online
dan
User avatar
ArkieTech
 
Posts: 3355
Joined: 29 May 2006
Location: NW Arkansas USA

Re: August 31, 2018

Postby SpAce » Fri Aug 31, 2018 1:14 pm

Code: Select all
.-------------------.------------------.---------------.
| 9   d1(2)8  12368 | 156    4   7     | 23   68   58  |
| 1-2  7      168-2 | 156    3  a1(2)6 | 9    468  458 |
| 5   d(2)4   2346  | 9      26  8     | 23   1    7   |
:-------------------+------------------+---------------:
| 8    3      145   | 2      7   146   | 56   9    14  |
| 124  9      1245  | 13468  68  1346  | 56   7    148 |
| 7    6      14    | 148    9   5     | 48   3    2   |
:-------------------+------------------+---------------:
| 3    5      1248  | 7      28  9     | 148  48   6   |
| 146  148    7     | 3468   5   346   | 148  2    9   |
| 246 c248    9     | 468    1  b246   | 7    5    3   |
'-------------------'------------------'---------------'

Grouped Skyscraper/Sashimi X-Wing:

(2)r2c6 = r9c6 - r9c2 = (2)r13c2 => -2 r2c13; 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."
User avatar
SpAce
 
Posts: 2671
Joined: 22 May 2017

Re: August 31, 2018

Postby SpAce » Fri Aug 31, 2018 2:53 pm

[Just to lift this to the top as I commented an earlier one. Looking forward to seeing more interesting solutions than my trivial one.]
-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."
User avatar
SpAce
 
Posts: 2671
Joined: 22 May 2017

Re: August 31, 2018

Postby eleven » Fri Aug 31, 2018 5:21 pm

Code: Select all
 *------------------------------------------------------------------*
 |  9    #128   12368   |  156     4    7      | #23    68    58    |
 |  12    7     1268    |  156     3    126    |  9     468   458   |
 |  5    #24    2346    |  9      b26   8      | #23    1     7     |
 |----------------------+----------------------+--------------------|
 |  8     3     145     |  2       7    146    |  56    9     14    |
 |  124   9     1245    |  1346-8 a68   1346   |  56    7     148   |
 |  7     6     14      |  14-8    9    5      |  48    3     2     |
 |----------------------+----------------------+--------------------|
 |  3     5     1248    |  7       2-8  9      |  148   48    6     |
 |  146   148   7       |  3468    5    346    |  148   2     9     |
 |  246  c248   9       | d468     1    246    |  7     5     3     |
 *------------------------------------------------------------------*

Almost x-wing 2r13c27: 2r9c2=6r3c5
(8=6)r5c5 - 6r3c5 == (2-8)r9c2 = r9c4 => -8r56c4,r7c5; stte
eleven
 
Posts: 3082
Joined: 10 February 2008

Re: August 31, 2018

Postby SteveG48 » Fri Aug 31, 2018 5:51 pm

Code: Select all
 *--------------------------------------------------------------------*
 | 9     d128    12368  | 156    4      7      |d23     68     58     |
 | 12     7      1268   | 156    3      126    | 9      468    458    |
 | 5     d24     2346   | 9      6-2    8      |d23     1      7      |
 *----------------------+----------------------+----------------------|
 | 8      3      145    | 2      7      146    | 56     9      14     |
 | 124    9      1245   | 13468  68     1346   | 56     7      148    |
 | 7      6      14     | 148    9      5      | 48     3      2      |
 *----------------------+----------------------+----------------------|
 | 3      5     b1248   | 7     a28     9      | 148    48     6      |
 | 146    148    7      | 3468   5      346    | 148    2      9      |
 | 246   c248    9      | 468    1      246    | 7      5      3      |
 *--------------------------------------------------------------------*


2r7c5 = r7c3 - r9c2 = [xwing:r13,c27] => -2 r3c5 ; stte
Steve
User avatar
SteveG48
2019 Supporter
 
Posts: 4202
Joined: 08 November 2013
Location: Orlando, Florida

Re: August 31, 2018

Postby Ngisa » Fri Aug 31, 2018 7:19 pm

Code: Select all
+-----------------------+---------------------+--------------------+
| 9      gd128    12368 | 156      4     7    |h23      68     58  |
|d12       7      1268  | 156      3     126  | 9       468    458 |
| 5       e24*    2346  | 9        6-2   8    |i23      1      7   |
+-----------------------+---------------------+--------------------+
| 8        3      145   | 2        7     146  | 56      9      14  |
| 124      9      1245  | 13468    68    1346 | 56      7      148 |
| 7        6      14    | 148      9     5    | 48      3      2   |
+-----------------------+---------------------+--------------------+
| 3        5      1248  | 7       a28    9    | 148     48     6   |
| 146     f148    7     | 3468     5     346  | 148     2      9   |
| 246     c248*   9     | b468     1     246  | 7       5      3   |
+-----------------------+---------------------+--------------------+

(2=8)r7c5 - r9c4 = r9c2* - (8=12)r2c1|r1c2 - (12=4*)r3c2 - (4*8*=1)r8c2 - (1=2)r1c2 -r1c7 = r3c7 => - 2r3c5; stte

Clement
Ngisa
 
Posts: 1378
Joined: 18 November 2012

Re: August 31, 2018

Postby Sudtyro2 » Fri Aug 31, 2018 8:06 pm

Code: Select all
       b                     b       b
+----------------+-----------------+--------------+
| 9   *128 12368 | 156   4   7     |*23  68  58   | c
| 12   7   1268  | 156   3  #126   | 9   468 458  | 
| 5   *24  2346  | 9     6-2 8     |*23  1   7    | c
+----------------+-----------------+--------------+
| 8    3   145   | 2     7   146   | 56  9   14   |
| 124  9   1245  | 13468 68  1346  | 56  7   148  |
| 7    6   14    | 148   9   5     | 48  3   2    |
+----------------+-----------------+--------------+
| 3    5   1248  | 7     28  9     | 148 48  6    |
| 146  148 7     | 3468  5   346   | 148 2   9    |
| 246 *248 9     | 468   1  *246   | 7   5   3    | c
+----------------+-----------------+--------------+

In 2s, a finned 3-Fish c267\r139 + fr2c6 => - 2r3c5; stte.
fin(#); covered base cell(*); eventual elimination(-).

For interested readers, the above fish was derived from a simple arcilla rows-per-column list: (259)(139)(12357)(-)(37)(29)(13)(-)(-).
The digits are row numbers per each column position (in parentheses). Rows form the cover, and columns form the base.
The desired elimination is underlined, and the bolded entries form one possible pseudo-ALS of four "digits" in three "cells." Digit "2" becomes the single fin at r2c6. Additional fish (larger or smaller) are easily constructed from other combinations of the cells in the full list.

SteveC
Sudtyro2
 
Posts: 754
Joined: 15 April 2013

Re: August 31, 2018

Postby SpAce » Fri Aug 31, 2018 8:47 pm

Sudtyro2 wrote:For interested readers, the above fish was derived from a simple arcilla rows-per-column list: (259)(139)(12357)(-)(37)(29)(13)(-)(-).

Good of you to mention that. I've found the Arcilla-method quite useful for spotting 3+sized basic (finned) fishes when solving purely on pencil and paper (X-Wings are easy anyway). It also helps to see the naked and hidden, as well as the bigger and smaller, variants of the same fish, as well as their partnering fishes. Then again, it takes a bit of effort (especially maintaining that list by hand) so I rarely bother and thus miss many fishing opportunities.

However, what I'd really like to see is a similar method to find franken and mutant fishes manually. I can't really spot them without software help, except very rarely (usually when I've already found another way to see the eliminations). I guess they're rarely that useful anyway (as other methods usually exist), but is there even a viable way to spot them with any kind of predictability (without an exceptional gift of pattern recognition)?
-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."
User avatar
SpAce
 
Posts: 2671
Joined: 22 May 2017

Re: August 31, 2018

Postby SpAce » Fri Aug 31, 2018 9:11 pm

Here's what I actually found first (because I like URs) but deemed it unnecessarily complicated:

Code: Select all
.--------------------.-------------------.-----------------.
| 9    a128#  12368* | 156     4    7    | b23*   68   58  |
|A12#   7    x1268#  | 156     3    126  |  9     468  458 |
| 5    (2)4#  2346*  | 9       6-2  8    |c(2)3*  1    7   |
:--------------------+-------------------+-----------------:
| 8     3     145    | 2       7    146  | 56     9    14  |
|B124   9    C1245   | 13468   68   1346 | 56     7    148 |
| 7     6     14     | 148     9    5    | 48     3    2   |
:--------------------+-------------------+-----------------:
| 3     5   yD1248   | 7    zE(2)8  9    | 148    48   6   |
| 146   148   7      | 3468    5    346  | 148    2    9   |
| 246   248   9      | 468     1    246  | 7      5    3   |
'--------------------'-------------------'-----------------'

UR(23) r13c37(*), using externals(#):

(2)r1c2 - r1c7 = r3c7 [a..c]
||
(2)r2c1 - r5c1 = r5c3 - r7c3 = r7c5 [A..E]
||
(2)r2c3 - r7c3 = r7c5 [x..z]
||
(2)r3c2

=> -2 r3c5; 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."
User avatar
SpAce
 
Posts: 2671
Joined: 22 May 2017

Re: August 31, 2018

Postby rjamil » Sat Sep 01, 2018 8:15 am

Code: Select all
9...4.....7..3.9..5..9.8.1783.2...9..9.....7..6...5.3235.7.9..6..7.5..2.....1...3
 +---------------+---------------+-------------+
 | 9   1(2) 368  | 156  4  7     | 23  68  58  |
 | 1-2 7    68   | 156  3  1(2)6 | 9   468 458 |
 | 5   4    36   | 9    26 8     | 23  1   7   |
 +---------------+---------------+-------------+
 | 8   3    145  | 2    7  146   | 56  9   14  |
 | 124 9    1245 | 1346 68 1346  | 56  7   148 |
 | 7   6    14   | 148  9  5     | 48  3   2   |
 +---------------+---------------+-------------+
 | 3   5    124  | 7    28 9     | 14  48  6   |
 | 146 18   7    | 3468 5  346   | 148 2   9   |
 | 246 (2)8 9    | 468  1  (2)46 | 7   5   3   |
 +---------------+---------------+-------------+

Skyscraper: Base r9c26, Cover r1c2 & r2c6 => -2 @ r2c1; stte

R. Jamil
rjamil
 
Posts: 729
Joined: 15 October 2014
Location: Karachi, Pakistan

Re: August 31, 2018

Postby SpAce » Sat Sep 01, 2018 2:32 pm

rjamil wrote:Skyscraper: Base r9c26, Cover r1c2 & r2c6 => -2 @ r2c1; stte

Hi rjamil! That's not a one-stepper, though, as you've clearly made other non-basic eliminations first. You should list those steps too.
-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."
User avatar
SpAce
 
Posts: 2671
Joined: 22 May 2017


Return to Puzzles