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Mar 05 VH

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Fri Mar 05, 2021 12:22 pm    Post subject: Mar 05 VH Reply with quote
Took me two steps: 789xywing then 12UR.
Anyone do it in one step?

Early Earl

Last edited by Earl on Sat Mar 06, 2021 12:40 pm; edited 1 time in total
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Fri Mar 05, 2021 1:07 pm    Post subject: Reply with quote
I didn't see any VH move that solved it in one step so I used the 279 XYZ Wing (pivot at r1c9) followed by the 27-5 XY Wing (pivot also at r1c9) to solve it.
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Fri Mar 05, 2021 3:38 pm    Post subject: Reply with quote
Code:

+---------+---------------+-------------+
| 57 8 6  | 2347 2479 237 | 1   245 279 |
| 9  2 3  | 47   1    5   | 478 6   78  |
| 57 1 4  | 6    279  8   | 79  25  3   |
+---------+---------------+-------------+
| 3  9 12 | 8    6    12  | 5   7   4   |
| 6  5 12 | 1247 247  127 | 89  3   89  |
| 4  7 8  | 5    3    9   | 2   1   6   |
+---------+---------------+-------------+
| 2  6 7  | 9    5    4   | 3   8   1   |
| 1  3 9  | 27   8    6   | 47  24  5   |
| 8  4 5  | 13   27   13  | 6   9   27  |
+---------+---------------+-------------+

Play this puzzle online at the Daily Sudoku site

At this point the 12 UR is visible but I found it didn't progress the puzzle

First time I used the 789 XY wing to make r3c7 = 9 then used the two 27 pairs with the 47 pairs to make r1c456 <> 2

On looking at again you can use the chain if r3c8 = 2, r8c8=4, r8c7=7, r3c7=9, r3c5=7, r9c5=2 giving no 2's in box 9

Tom
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
PostPosted: Sat Mar 06, 2021 3:24 pm    Post subject: Reply with quote
Hi everyone,

Skyscraper with number 2 in r3c58,r9c59 and -2 in r1c9,r8c8
or in r3c58,r8c48 and -2 in r1c4,r9c5

Ciao Gianni
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