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  Topic: VH+ 012122
Mogulmeister

Replies: 6
Views: 173

PostForum: Other puzzles   Posted: Tue Jan 25, 2022 5:01 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

Or.....c=3 d=1 so a=8

and at the same time

c=3 and b=8

Two ...
  Topic: VH+ 012122
Mogulmeister

Replies: 6
Views: 173

PostForum: Other puzzles   Posted: Tue Jan 25, 2022 4:46 pm   Subject: VH+ 012122
The ANP <137> in r8c12 also comes to the same conclusion:

ANP true and r8c7 = 8 r5c7 =1 and r4c9 < > 1
ANP false and r7c2 =1 r7c4= 7 r7c8 =3 so r5c8 < > 3 and r4c9 = 3 (< > ...
  Topic: VH+ 012122
Mogulmeister

Replies: 6
Views: 173

PostForum: Other puzzles   Posted: Tue Jan 25, 2022 4:12 pm   Subject: VH+ 012122
In general if you see 3 strong links in a four sided structure itís worth looking at. Whether a is 1 or 8 it eliminates 1 from r4c9.

Equally you could set r4c9 to 1 and your contradiction loop d- ...
  Topic: VH+ 012122
Mogulmeister

Replies: 6
Views: 173

PostForum: Other puzzles   Posted: Mon Jan 24, 2022 11:46 am   Subject: VH+ 012122
On a solving note, this came to me when I saw what I thought was going to be a skyscraper on 1's ab and cd. The extra 1's in r29c9 put paid to that idea but then I noticed that the cd "leg" ...
  Topic: Jan 22 VH
Mogulmeister

Replies: 10
Views: 318

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 11:38 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!

Good spot Tom
  Topic: Jan 22 VH
Mogulmeister

Replies: 10
Views: 318

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 11:21 am   Subject: Jan 22 VH
I don't know for sure, but if that had appeared in The Telegraph it might well have been deemed a diabolical ?
  Topic: VH Jan 24th
Mogulmeister

Replies: 1
Views: 120

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 11:16 am   Subject: VH Jan 24th
From the sublime to the.....
  Topic: VH Jan 24th
Mogulmeister

Replies: 1
Views: 120

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 11:14 am   Subject: VH Jan 24th

+-------+-------+-------+
| . 2 . | . 7 . | . . 5 |
| . . 9 | 4 . 2 | . . 1 |
| . . . | 3 . . | 6 9 . |
+-------+-------+-------+
| . . 5 | . . . | . 1 . |
| . 7 . | 9 . 3 | . 8 . |
| . 3 . | ...
  Topic: Jan 22 VH
Mogulmeister

Replies: 10
Views: 318

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 9:23 am   Subject: Jan 22 VH
Thanks Peter.
  Topic: Jan 22 VH
Mogulmeister

Replies: 10
Views: 318

PostForum: Daily Sudoku puzzles   Posted: Mon Jan 24, 2022 7:19 am   Subject: Jan 22 VH
Don,

Given the variable nature of the grading algorithm, what grade do you think this one was at ?
  Topic: Jan 22 VH
Mogulmeister

Replies: 10
Views: 318

PostForum: Daily Sudoku puzzles   Posted: Sun Jan 23, 2022 6:17 pm   Subject: Jan 22 VH
Another second step using Gianniís grid is the <248> ANP in r12c2.

If ANP is true then r4c2 = 5 r5c3 <> 5 r8c3 = 5 and r8c9 < > 5
If ANP is false then r2c2 = 8 r3c3 = 2 r3c9 = ...
  Topic: VH+ 012122
Mogulmeister

Replies: 6
Views: 173

PostForum: Other puzzles   Posted: Fri Jan 21, 2022 9:13 pm   Subject: VH+ 012122
Doesn't really matter what you put in r5c7. Either way r4c9 < > 1. (a-d)

+--------------+--------------+--------------+
| 27 78 5 | 9 1 28 | 3 6 4 |
| 12 9 4 | 3 5 ...
  Topic: Evil is as evil does
Mogulmeister

Replies: 4
Views: 489

PostForum: Other puzzles   Posted: Thu Jan 20, 2022 2:40 pm   Subject: Evil is as evil does
+---------------+-----------------+-----------------+
| 37 9 6 | 37 1 4 | 5 2 8 |
| 5 2 1 | 6 39 8 | 34 349 7 |
| 4 8 37 | 379 5 2 | ...
  Topic: Jan 18 VH
Mogulmeister

Replies: 3
Views: 342

PostForum: Daily Sudoku puzzles   Posted: Tue Jan 18, 2022 7:14 pm   Subject: Jan 18 VH
Really nice ALS configuration worth a squint.

https://i.imgur.com/i7GwzVn.png

Yellow Set {8,9}
Pink Set {1,6,7,8,9}

Restricted common is 8
Common Candidate Eliminated is 9 (red) which is se ...
  Topic: Jan 18 VH
Mogulmeister

Replies: 3
Views: 342

PostForum: Daily Sudoku puzzles   Posted: Tue Jan 18, 2022 1:55 pm   Subject: Jan 18 VH
There's an ANP <136> at r4c12

If the ANP is true the 36 pair means r4c7 = 9, r5c9 = 6, r8c9 = 1 and r9c8 <> 1

OR

If the ANP is false then r2c1 = 9, r2c8 = 1 and r9c8 < > 1
  Topic: VH Jan 12
Mogulmeister

Replies: 7
Views: 560

PostForum: Daily Sudoku puzzles   Posted: Thu Jan 13, 2022 1:37 pm   Subject: VH Jan 12
Hi Earl

Are you happy with your finned X-wing in c2 & c3 ?

I think I see where you are coming from but doesn't the 1 in r6c3 make things a little awkward ?
  Topic: VH Jan 12
Mogulmeister

Replies: 7
Views: 560

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 12, 2022 3:41 pm   Subject: VH Jan 12
Another even more direct route (possibly in the style of Tom) is if r3c5 = 2 then no 7's in box 2.
  Topic: VH Jan 12
Mogulmeister

Replies: 7
Views: 560

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 12, 2022 11:30 am   Subject: VH Jan 12
if you make r3c5 = 2 then r8c5 = 7 so r9c6 = 5 and r7c5 = 2 and back to the start r3c5 < > 2

R3c5 < > 2

For those that speak Eureka:

(2-7)r3c5=r8c5-(7=5)r9c6-(5=2)r7c5-(2=7)r3c5
  Topic: VH Jan 12
Mogulmeister

Replies: 7
Views: 560

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 12, 2022 11:13 am   Subject: VH Jan 12
Pincers for 4 at r5c5 and r9c4; r5c4 and r8c5 <> 4
  Topic: VH Jan 12
Mogulmeister

Replies: 7
Views: 560

PostForum: Daily Sudoku puzzles   Posted: Wed Jan 12, 2022 11:02 am   Subject: VH Jan 12
+---------------+--------------+--------------+
| 2 5 7 | 8 6 39 | 1 4 39 |
| 69 36 8 | 5 1 4 | 7 2 39 |
| 4 13 19 | 29 27 379 | 6 8 5 |
+--- ...
 
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