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VH090117

 
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Fri Sep 01, 2017 7:03 am    Post subject: VH090117 Reply with quote
Code:
 *-----------*
 |...|.7.|.2.|
 |3.9|8.5|...|
 |7..|3..|.85|
 |---+---+---|
 |...|..8|..3|
 |.5.|.4.|.1.|
 |1..|5..|...|
 |---+---+---|
 |89.|..4|..1|
 |...|2.1|4.8|
 |.7.|.8.|...|
 *-----------*


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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Fri Sep 01, 2017 11:47 am    Post subject: Reply with quote
Hi everyone

Code:

+-----------+-----------+---------------+
| 5 1   8   | 4 7   69  | 3   2   69    |
| 3 26  9   | 8 126 5   | 17  46  467   |
| 7 246 46  | 3 126 269 | 19  8   5     |
+-----------+-----------+---------------+
| 9 46  467 | 1 26  8   | 257 456 3     |
| 2 5   3   | 9 4   67  | 8   1   67    |
| 1 8   467 | 5 3   267 | 279 469 24679 |
+-----------+-----------+---------------+
| 8 9   2   | 7 5   4   | 6   3   1     |
| 6 3   5   | 2 9   1   | 4   7   8     |
| 4 7   1   | 6 8   3   | 259 59  29    |
+-----------+-----------+---------------+

Play this puzzle online at the Daily Sudoku site.

[ (4-6)R2C8=(6)R46C8-(6=7)R5C9;(4)R2C8-(4)R2C9 and (4-6)R2C8=(6)R46C8-(6)R5C9=(6)R5C6-(6)R1C6=(6)R1C9-(6=7)R2C9)]=>contradiction two singles 7 in column 9=>-4R2C8=>solution stte.
or
[(6-7)R5C6=(7)R5C9-(7)R2C9; (6)R5C6-(6)R1C6=(6)R1C9-(6=4)R2C9 and (6)R5C6-(6)R1C6=(6)R1C9-(6=4)R2C8]=>contradiction two singles 4 in box 3=>-6R5C6=>solution stte.

or –(7)R5C9 biunivoca with -6R5C6.

or

[(9)R9C9-(9=6)R1C9-(6)R2C8 and (9-2)R9C9=(2-4)R6C9=(4)R2C9-(4)R2C8=>contradiction R2C8=Ø=>-9R9C9=>solution stte.

Ciao a Tutti
Paolo
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 943
Location: Rimini, Italy
PostPosted: Fri Sep 01, 2017 12:20 pm    Post subject: Reply with quote
Hi everyone,

Code:

+-----------+-----------+---------------+
| 5 1   8   | 4 7   69  | 3   2   69    |
| 3 26  9   | 8 126 5   | 17  46  467   |
| 7 246 46  | 3 126 269 | 19  8   5     |
+-----------+-----------+---------------+
| 9 46  467 | 1 26  8   | 257 456 3     |
| 2 5   3   | 9 4   67  | 8   1   67    |
| 1 8   467 | 5 3   267 | 279 469 24679 |
+-----------+-----------+---------------+
| 8 9   2   | 7 5   4   | 6   3   1     |
| 6 3   5   | 2 9   1   | 4   7   8     |
| 4 7   1   | 6 8   3   | 259 59  29    |
+-----------+-----------+---------------+

Play this puzzle online at the Daily Sudoku site

XYZ-Wing 4,6,7 in r2c89, r5c9 and -6 in r1c9
or
XY-Chain r2c7 - 1 - r3c7 - 9 - r1c9 - 6 - r5c9 and -7 in r2c9, r46c7

I do not say it all the time, but thanks to arkietech for all these beautiful schemes.

Ciao Gianni
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Mon Sep 04, 2017 1:42 am    Post subject: Reply with quote
Hello all,

Spotted the XYZ Wing as well as ZeroAssoluto...

Very nice puzzle.
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