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Mar 16 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1027
Location: Dar es Salaam Tanzania

PostPosted: Sun Mar 15, 2020 10:42 pm    Post subject: Mar 16 VH Reply with quote

Code:

+----------------------+-------------------+------------------------+
| 1       467     3467 | 8       5     9   | 367       367       2  |
| 2       5       9    | 37      4     36  | 13678     13678     38 |
| 378     678     3678 | 237     1     236 | 59        59        4  |
+----------------------+-------------------+------------------------+
| 9       2      c78   | 1       6     358 | 3578      4         38 |
| 6       478     5    | 34      9     38  | 2         378       1  |
|b48      3       1    | 45      2     7   | 589       589       6  |
+----------------------+-------------------+------------------------+
|a47      1       4-7  | 25      8     25  | 36        36        9  |
| 38      68      368  | 9       7     1   | 4         2         5  |
| 5       9       2    | 6       3     4   | 18        18        7  |
+----------------------+-------------------+------------------------+

XY-Wing: (7=4)r7c1 - (4=8)r6c1 - (8=7)r4c3 => - 7r7c3; stte
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 524
Location: Rimini, Italy

PostPosted: Mon Mar 16, 2020 9:18 am    Post subject: Reply with quote

Hi everyone,

Code:

+--------------+-----------+----------------+
| 1   467 3467 | 8   5 9   | 367   367   2  |
| 2   5   9    | 37  4 36  | 13678 13678 38 |
| 378 678 3678 | 237 1 236 | 59    59    4  |
+--------------+-----------+----------------+
| 9   2   78   | 1   6 358 | 3578  4     38 |
| 6   478 5    | 34  9 38  | 2     378   1  |
| 48  3   1    | 45  2 7   | 589   59    6  |
+--------------+-----------+----------------+
| 47  1   47   | 25  8 25  | 36    36    9  |
| 38  68  368  | 9   7 1   | 4     2     5  |
| 5   9   2    | 6   3 4   | 18    18    7  |
+--------------+-----------+----------------+

Play this puzzle online at the Daily Sudoku site

possible also
XY-Wing 4,7,8 in r6c1,r47c3 and -4 in r7c1
or
UR 5,9 in r36c78 and r6c7=8

Ciao Gianni
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williamholiday



Joined: 01 Apr 2011
Posts: 27
Location: Connecticut USA

PostPosted: Mon Mar 16, 2020 10:36 am    Post subject: Reply with quote

Also xyz wing 358 pr4c6, r4c3-8

health and happiness to all!
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immpy



Joined: 06 May 2017
Posts: 319

PostPosted: Mon Mar 16, 2020 1:06 pm    Post subject: Reply with quote

Another possibility with the power and elegance of a Sue de Coq. Certainly not needed (required) or necessary, but present and identifiable.

Sue de Coq: r46c7 - {35789} (r3c7-{59}, r4c9-{38}) => r5c8<>3,8 (=7!)

cheers...imp

...liking the UR (59) which closes this puzzle well also....
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Earl



Joined: 30 May 2007
Posts: 631
Location: Victoria, KS

PostPosted: Mon Mar 16, 2020 1:53 pm    Post subject: Mar 16 VH Reply with quote

Or do it the hard way:

Type II UR36 R1,7
R1C7 or C8 must be a 7, so R2C4 = 7

Early Earl
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