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Jun 07 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
PostPosted: Tue Jun 07, 2022 9:52 am    Post subject: Jun 07 VH Reply with quote
Hi everyone,

Code:

+-----------+--------------+----------+
| 8  9  57  | 3   1   57   | 6   2  4 |
| 2  45 457 | 6   789 5789 | 79  3  1 |
| 1  6  3   | 2   4   79   | 79  5  8 |
+-----------+--------------+----------+
| 49 1  68  | 89  5   2    | 3   46 7 |
| 49 3  26  | 179 79  1679 | 124 8  5 |
| 5  7  268 | 4   3   168  | 12  16 9 |
+-----------+--------------+----------+
| 6  2  1   | 78  78  4    | 5   9  3 |
| 7  45 459 | 159 2   3    | 8   14 6 |
| 3  8  459 | 159 6   19   | 14  7  2 |
+-----------+--------------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing
7,8,9 in r47c4,r5c5 and -7 in r5c4,r7c5
7,8,9 in r4c4,r57c5 and -8 in r7c4


Ciao Gianni
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glesco



Joined: 12 May 2022
Posts: 36
PostPosted: Tue Jun 07, 2022 6:51 pm    Post subject: Reply with quote
A Swordfish on rows removes 1 from r8c4. stte from then on
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Tue Jun 07, 2022 7:44 pm    Post subject: Reply with quote
Not sure I understand swordfishes, but a <179> ANP in gf

If the Pair <79> in gf is true then e=8, d=6, c=4, b=1
If the Pair <79> in gf is false then g=1
either way a is not <1> to solve

Code:

+------------+----------------+-----------+
| 8  9   57  |  3    1   57   | 6    2  4 |
| 2  45  457 |  6    789 5789 | 79   3  1 |
| 1  6   3   |  2    4   79   | 79   5  8 |
+------------+----------------+-----------+
| 49 1  d68  | e89   5   2    | 3   c46 7 |
| 49 3   26  | g179 f79  1679 | 124  8  5 |
| 5  7   268 |  4    3   168  | 12   16 9 |
+------------+----------------+-----------+
| 6  2   1   |  78   78  4    | 5    9  3 |
| 7  45  459 | a159  2   3    | 8   b14 6 |
| 3  8   459 |  159  6   19   | 14   7  2 |
+------------+----------------+-----------+


Last edited by TomC on Tue Jun 07, 2022 7:59 pm; edited 3 times in total
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Pat



Joined: 23 Feb 2010
Posts: 207
PostPosted: Tue Jun 07, 2022 7:57 pm    Post subject: Reply with quote
thanks, i was about to comment that a Swordfish is only relevant when 6 (or more) still missing.
here, only 4 1s still missing, so highest fish would be X-wing.
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