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arkietech
Joined: 31 Jul 2008 Posts: 1834 Location: Northwest Arkansas USA
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Posted: Fri Sep 01, 2017 7:03 am Post subject: VH090117 |
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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
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Posted: Fri Sep 01, 2017 11:47 am Post subject: |
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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 |
+-----------+-----------+---------------+
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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: 941 Location: Rimini, Italy
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Posted: Fri Sep 01, 2017 12:20 pm Post subject: |
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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 |
+-----------+-----------+---------------+
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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
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Posted: Mon Sep 04, 2017 1:42 am Post subject: |
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Hello all,
Spotted the XYZ Wing as well as ZeroAssoluto...
Very nice puzzle. |
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