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  Topic: June 19 VH
hughwill

Replies: 1
Views: 471

PostForum: Daily Sudoku puzzles   Posted: Wed Jun 19, 2019 9:07 am   Subject: June 19 VH
Not VH.

Again
  Topic: May23VH
hughwill

Replies: 1
Views: 734

PostForum: Daily Sudoku puzzles   Posted: Thu May 23, 2019 9:52 pm   Subject: May23VH
Yep. 2 in a row.
  Topic: Nov 30 NVH
hughwill

Replies: 4
Views: 2738

PostForum: Daily Sudoku puzzles   Posted: Fri Nov 30, 2018 10:21 am   Subject: Nov 30 NVH

+--------------+-----------+------------------+
| 6 5 9 | 4 2 8 | 1 3 7 |
| 3 2 8 | 1 5 7 | 469 69 46 |
| 4 1 7 | 9 6 3 | 58 2 58 |
+- ...
  Topic: Nov 26 VH
hughwill

Replies: 2
Views: 2306

PostForum: Daily Sudoku puzzles   Posted: Mon Nov 26, 2018 11:40 am   Subject: Nov 26 VH
After 2 VHs which were solvable by basics, I think we've got one
that is a 4 stepper needing all 3 VH techniques!


+-------------+--------------+----------+
| 8 12 59 | 3 25 7 | 4 1 ...
  Topic: Nov 24 VH
hughwill

Replies: 2
Views: 2307

PostForum: Daily Sudoku puzzles   Posted: Sun Nov 25, 2018 9:57 am   Subject: NOV 24VH

+---------------+------------------+---------------+
| 2578 6 2578 | 4578 24578 9 | 128 1235 138 |
| 2578 9 3 | 1 2578 578 | 28 6 4 |
| 258 4 1 | 58 6 3 | ...
  Topic: Nov 01 VH
hughwill

Replies: 1
Views: 2221

PostForum: Daily Sudoku puzzles   Posted: Thu Nov 01, 2018 9:41 am   Subject: Nov 1 VH
Instead of W wing in Gianni's solution, you can substitute 469 XYZ-wing
pivot r9c2 relieving r7c2 of its 9. Then the 9 X-wing appears to crack the
puzzle.
  Topic: Jul 29 NVH
hughwill

Replies: 0
Views: 3163

PostForum: Daily Sudoku puzzles   Posted: Sun Jul 29, 2018 9:52 am   Subject: Jul 29 NVH

+---------------+----------+---------------+
| 7 14 149 | 5 2 8 | 16 3 469 |
| 2 3 14 | 9 6 7 | 5 148 48 |
| 8 6 5 | 1 4 3 | 27 27 279 |
+------------- ...
  Topic: 6 May Hard(?)
hughwill

Replies: 2
Views: 3370

PostForum: Daily Sudoku puzzles   Posted: Mon May 07, 2018 7:41 am   Subject: 6 May Hard(?)
Hi hugh,

if you look at Row 5, you can see that the number 8 is only in r5c4.
This brings you to the solution

Ciao Gianni

Grazie mille, Gianni
  Topic: 6 May Hard(?)
hughwill

Replies: 2
Views: 3370

PostForum: Daily Sudoku puzzles   Posted: Sun May 06, 2018 10:17 am   Subject: 6 May Hard(?)

+---------------+-------------+-------------+
| 67 8 67 | 5 39 2 | 4 1 39 |
| 25 25 9 | 47 346 1 | 36 8 367 |
| 1 3 4 | 79 8 69 | 5 29 2679 |
+--------- ...
  Topic: Apr 29 VH
hughwill

Replies: 5
Views: 5780

PostForum: Daily Sudoku puzzles   Posted: Sun Apr 29, 2018 9:09 am   Subject: Apr 29 VH
Urgh! A VH solved by an X wing.
X-Wing on 7 c67 -7r8c6 r8c8=3 stte
Also another much less interesting UR than Marty's 17 r34 r6c2=7 stte
  Topic: Mar 28 VH
hughwill

Replies: 3
Views: 4120

PostForum: Daily Sudoku puzzles   Posted: Wed Mar 28, 2018 2:24 pm   Subject: Mar 28 VH
I think Gianni's second 'W wing' is a bit more complex. Obviously if r3c3=2: r7c3=8 and r7c8=2. What the 'W wing' on r1 shows is that r3c3 and r7c8 can't both be 2 so therefore both must be 8. Don't ...
  Topic: Jan 19 VH
hughwill

Replies: 4
Views: 5472

PostForum: Daily Sudoku puzzles   Posted: Fri Jan 19, 2018 4:04 pm   Subject: Jan 19 VH

+----------+-----------+-------------+
| 5 38 1 | 6 9 7 | 38 4 2 |
| 9 4 37 | 138 5 2 | 3678 137 36 |
| 78 2 6 | 138 38 4 | 5 137 9 |
+----------+-----------+-------------+ ...
  Topic: Jan 09 VH
hughwill

Replies: 4
Views: 4494

PostForum: Daily Sudoku puzzles   Posted: Tue Jan 09, 2018 9:12 am   Subject: Jan 09 VH
After basics:
+--------------+------------+-------------+
| 7 6 89 | 2 5 1 | 4 89 3 |
| 5 4 3 | 9 8 7 | 6 2 1 |
| 1 2 89 | 6 3 4 | 589 589 7 |
+--- ...
  Topic: Dec 19 VH
hughwill

Replies: 16
Views: 13675

PostForum: Daily Sudoku puzzles   Posted: Tue Dec 19, 2017 9:54 am   Subject: Dec 19 VH
Unusual one using classic methods as one X wing
on 6 opens another X- wing on 6 before revealing
an XY-wing that sets it.

6 X wing- r26
6 X-wing- r57
45-2 XY wing pivot r4c6 r7c8<>2 st ...
  Topic: Nov 7 VH
hughwill

Replies: 2
Views: 4080

PostForum: Daily Sudoku puzzles   Posted: Tue Nov 07, 2017 12:50 pm   Subject: Nov 7 VH
89-7 XY-wing pivot r8c5 (or 79-8 pivot r7c6 if preferred) followed by
17-9 XY-wing pivot r6c2 (once again with a twin...) - r3c6 <>9 which leads to stte.
  Topic: Oct. 6 VH
hughwill

Replies: 11
Views: 8691

PostForum: Daily Sudoku puzzles   Posted: Fri Oct 06, 2017 6:02 pm   Subject: Re: Oct. 6 VH



After the XYZ wing:
+-----------+---------+------------+
| 8 9 46 | 3 7 2 | 1 5 46 |
| 5 46 3 | 9 8 1 | 67 47 2 |
| 7 2 1 | 4 6 5 | 9 8 3 |
+-----------+-------- ...
  Topic: Sept 1 Hard
hughwill

Replies: 4
Views: 4831

PostForum: Daily Sudoku puzzles   Posted: Sat Sep 02, 2017 8:45 am   Subject: Sept 1 Hard
Hi Hugh,

if you only want to use basics, you can see that in column 6, number 1 is only in sector 8; when you delete number 1 from r8c5 you can solve it with basics.

Ciao Gianni

Sometimes yo ...
  Topic: Sept 1 Hard
hughwill

Replies: 4
Views: 4831

PostForum: Daily Sudoku puzzles   Posted: Fri Sep 01, 2017 10:16 am   Subject: Sept 1 Hard

+----------+---------------+----------+
| 7 15 4 | 15 89 89 | 6 3 2 |
| 9 8 56 | 2 356 35 | 4 1 7 |
| 3 2 16 | 46 146 7 | 8 5 9 |
+----------+---------------+------ ...
  Topic: Aug 27 VH
hughwill

Replies: 4
Views: 6012

PostForum: Daily Sudoku puzzles   Posted: Sun Aug 27, 2017 11:27 am   Subject: Aug 27 VH
I think I was more excited by the last 'VH' which could be done with
basics.....

Hugh
  Topic: Aug 23 VH
hughwill

Replies: 15
Views: 11938

PostForum: Daily Sudoku puzzles   Posted: Wed Aug 23, 2017 9:09 am   Subject: Re: Aug 23 VH

+-----------+-----------+--------------+
| 146 12 5 | 67 9 167 | 3 8 1246 |
| 146 8 7 | 5 3 2 | 16 146 9 |
| 169 129 3 | 4 16 8 | 7 5 12 |
+-----------+-----------+----- ...
 
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