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  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 9:48 pm   Subject: Jan 27 VH
Exactly, it's the way I see 'em
  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 9:41 pm   Subject: Jan 27 VH
If r5c9=9 then r4c4=9, x=9 , no <9> in c3 is where I thought you were
  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 9:35 pm   Subject: Jan 27 VH
Understand now, I just think if you drop a number from a column you remove it
  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 8:55 pm   Subject: Jan 27 VH
Ö.and drops two 9ís in column 9 !
Not sure about this, do you mean c3?
  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 8:00 pm   Subject: Jan 27 VH
Again another similar result using the 9's

r5c9 <> 9 as then d=9, a=9, leaves no room for <9> in box 4
  Topic: Jan 27 VH
TomC

Replies: 18
Views: 127

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 27, 2022 4:14 pm   Subject: Jan 27 VH
Two steps for me
X wing on <1> in r49c24 gives -1 in r9c1 (and r4c9)
then XY wing <679> pivot r7c3 gives -7 in r1c1
  Topic: VH+ 012122
TomC

Replies: 6
Views: 215

PostForum: Other puzzles   Posted: Tue Jan 25, 2022 3:03 pm   Subject: VH+ 012122
This took me a little while to understand this solution

I now can see it as if c=3, d=1, a=8 and then no <8> in box 9
  Topic: Jan 22 VH
TomC

Replies: 10
Views: 391

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 10:37 am   Subject: Jan 22 VH
Another second step using Gianniís grid is -8 in r4c9 as this is needed to avoid the <57> UR in r26c78

This has certainly been the trickiest VH for a while!
  Topic: Jan 22 VH
TomC

Replies: 10
Views: 391

PostForum: Daily Sudoku puzzles   Posted: Sun Jan 23, 2022 1:46 pm   Subject: Jan 22 VH
An alternative second step to Gianni's post

<25> W wing in r3c9 and r5c3 gives -2 in r3c3
  Topic: Jan 18 VH
TomC

Replies: 3
Views: 373

PostForum: Daily Sudoku puzzles   Posted: Tue Jan 18, 2022 10:29 am   Subject: Jan 18 VH
Pincers on <1> in r2c8 and r8c9 leads to -1 in r3c9 and r9c8
  Topic: Jan 08 VH
TomC

Replies: 6
Views: 864

PostForum: Daily Sudoku puzzles   Posted: Sat Jan 08, 2022 4:54 pm   Subject: Jan 08 VH
or pincers on <6> in r7c5 and r9c7 gives -6 in r9c45 and r7c7
  Topic: Jan 08 VH
TomC

Replies: 6
Views: 864

PostForum: Daily Sudoku puzzles   Posted: Sat Jan 08, 2022 3:51 pm   Subject: Jan 08 VH
Another way to solve is by the nearly <26> pair in r9

If r9c7=4, <26> pair gives r7c5=1, r8c4=3, r8c7= also 4!

r9c7 must be <6>
  Topic: Jan 08 VH
TomC

Replies: 6
Views: 864

PostForum: Daily Sudoku puzzles   Posted: Sat Jan 08, 2022 1:44 pm   Subject: Jan 08 VH
Gianni, is there not another basic move needed before the XY wings will work?
  Topic: Jan 05 VH
TomC

Replies: 6
Views: 906

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 06, 2022 8:13 pm   Subject: Jan 05 VH
Looking at this again, you don't need the 145 XYZ wing first

if the pivot in r7c2=5 then r8c7=5, r3c7=4, r7c7=8
if the pivot in r7c2=4 then r6c2=8

Pincers of 8 remove the 8 from r6c7 and solve ...
  Topic: VH 123021
TomC

Replies: 8
Views: 1202

PostForum: Other puzzles   Posted: Wed Jan 05, 2022 7:20 pm   Subject: VH 123021
Not sure, I'm thinking it maybe Paloma Faith's third album you're hearing
  Topic: Jan 05 VH
TomC

Replies: 6
Views: 906

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 05, 2022 1:15 pm   Subject: Jan 05 VH

+----------+--------+-------------+
| 3 7 4 | 6 1 5 | 2 9 8 |
| 6 2 5 | 9 4 8 | 17 3 17 |
| 1 9 8 | 7 3 2 | 45 46 56 |
+----------+--------+-------------+
| 57c 1 6 | ...
  Topic: Jan 05 VH
TomC

Replies: 6
Views: 906

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 05, 2022 12:59 pm   Subject: Jan 05 VH
code
  Topic: VH 123021
TomC

Replies: 8
Views: 1202

PostForum: Other puzzles   Posted: Wed Jan 05, 2022 11:56 am   Subject: VH 123021
Extend the XY chain by one and r6c7 <> 4 as then a=4 and no <4> in box 5
  Topic: Unfair 010222
TomC

Replies: 6
Views: 1032

PostForum: Other puzzles   Posted: Mon Jan 03, 2022 7:39 pm   Subject: Unfair 010222
My explanation clearly wasn't complete, so....

It's impossible
For a quad to hold just three
It's just impossible
  Topic: Unfair 010222
TomC

Replies: 6
Views: 1032

PostForum: Other puzzles   Posted: Mon Jan 03, 2022 9:38 am   Subject: Unfair 010222
r6c456 <> 1 as this would create a <468> quad in row 4

Easier to see than explain, but here goes:

if r6c4=1, then r1c4=5, so r4 has [68 468 468 46]

if r6c56=1, then <69> pai ...
 
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