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  Topic: Nov 23 VH
TomC

Replies: 2
Views: 381

PostForum: Daily Sudoku puzzles   Posted: Wed Nov 23, 2022 3:39 pm   Subject: Nov 23 VH
I used two W wings to solve

<13> W-wing -1 in r1c7, then
<89> W-wing -8 in r1c8
  Topic: VH+ 111522
TomC

Replies: 6
Views: 1291

PostForum: Other puzzles   Posted: Wed Nov 16, 2022 4:27 pm   Subject: VH+ 111522
Remove <8> from r6c4 to solve


+--------------+------------------+-------------+
| 2 5 78 | 1 4 6 | 79 3 789 |
| 9 6 1 | 3 7 8 | 4 5 2 |
| 47 ...
  Topic: Nov 11 VH
TomC

Replies: 2
Views: 648

PostForum: Daily Sudoku puzzles   Posted: Fri Nov 11, 2022 3:02 pm   Subject: Nov 11 VH
Another way to look at this is an Almost Naked Pair in r1c79 (ef)

If r1c79 is a <25> pair then m=1, a=7
If r1c79 is NOT a <25> pair then e=7, d<>7, c=7, b<>7, a=7
  Topic: Nov 11 VH
TomC

Replies: 2
Views: 648

PostForum: Daily Sudoku puzzles   Posted: Fri Nov 11, 2022 1:29 pm   Subject: Nov 11 VH
Remove <1> from r2c1 to solve


+-----------------+-----------------+---------------------+
| 4 m15 9 | 6 8 x17 | e257 3 f25 |
| a17 6 378 | 2 5 137 | ...
  Topic: VH+ 110222
TomC

Replies: 3
Views: 1319

PostForum: Other puzzles   Posted: Sat Nov 05, 2022 10:14 am   Subject: VH+ 110222
Nice puzzle Immpy!

I started off seeing that if r4c5=8, r6c5=7 would give <12> UR in r45c49

But then if r4c4=8, r6c5=7 you can follow the <78> pairs around the grid to get r6c5=8, t ...
  Topic: Nov 03 VH
TomC

Replies: 1
Views: 818

PostForum: Daily Sudoku puzzles   Posted: Thu Nov 03, 2022 11:43 am   Subject: A non Standard Solution
Remove <9> from r1c6 and r8c4 to solve


+------------+-----------------+-----------------+
| 8 569 459 | 3 7 x129 | 14 456 25 |
| 3 67 47 | 16 5 12 | 1478 9 2 ...
  Topic: Oct 31 VH
TomC

Replies: 4
Views: 1303

PostForum: Daily Sudoku puzzles   Posted: Tue Nov 01, 2022 1:31 pm   Subject: Oct 31 VH
You can make the same eliminations as the 69-1 XY-wing but not use the XYZ-wing first


+-------+------------------+------------+
| 3 8 2 | a167 b67 x156 | 4 9 56 |
| 6 4 9 | 28 238 ...
  Topic: Oct 31 VH
TomC

Replies: 4
Views: 1303

PostForum: Daily Sudoku puzzles   Posted: Mon Oct 31, 2022 11:53 am   Subject: Oct 31 VH
Remove <6> from r3c6 to solve


+-------+---------------+------------+
| 3 8 2 | 167 67 156 | 4 9 56 |
| 6 4 9 | 28 238 c35 | 7 1 b25 |
| 7 1 5 | 4 269 x69 | 8 3 a26 | ...
  Topic: Oct 28 VH
TomC

Replies: 1
Views: 978

PostForum: Daily Sudoku puzzles   Posted: Fri Oct 28, 2022 8:09 am   Subject: Oct 28 VH
Not very hard
  Topic: Oct 22 VH
TomC

Replies: 3
Views: 1308

PostForum: Daily Sudoku puzzles   Posted: Sat Oct 22, 2022 11:44 am   Subject: Oct 22 VH
Sometimes eliminating the impossible can solve a puzzle

Remove <4> from r3c3 to solve

+----------------+----------------+-------------+
| 2 9 45 | 7 34 35 | 8 1 6 |
...
  Topic: VH+ 101722
TomC

Replies: 5
Views: 2278

PostForum: Other puzzles   Posted: Tue Oct 18, 2022 6:56 pm   Subject: VH+ 101722
Alternatively, there is a <45> W wing in r4c2 and r5c7 which removes the <4> from r4c89
  Topic: VH+ 101722
TomC

Replies: 5
Views: 2278

PostForum: Other puzzles   Posted: Tue Oct 18, 2022 6:51 pm   Subject: VH+ 101722
Well Immpy, your VH+ 101122 puzzle had me completely stumped, but I faired better with this one!

Remove <1> from r4c8 to solve


+------------+---------------+-----------------+
| 3 8 ...
  Topic: VH+ 100822
TomC

Replies: 14
Views: 4256

PostForum: Other puzzles   Posted: Mon Oct 10, 2022 7:26 am   Subject: VH+ 100822
My solution was to remove <2> from r89c3 to solve

+--------------------+-------------------+------------+
| 6 5 .28 | 3 .289 4 | 7 1 89 |
| 3 178 178 | 16 ...
  Topic: Oct 09 VH
TomC

Replies: 4
Views: 1705

PostForum: Daily Sudoku puzzles   Posted: Sun Oct 09, 2022 8:44 pm   Subject: Oct 09 VH
r5c4 = 2 to solve

Look at r9c2 = <29>

Two options:
1. Only two <2>'s in c4 so if r9c2=2 then r5c4=2
2. If r9c2=9 then c=3, b=7, r5c7=1 then r5c4=2
  Topic: Oct 09 VH
TomC

Replies: 4
Views: 1705

PostForum: Daily Sudoku puzzles   Posted: Sun Oct 09, 2022 9:50 am   Subject: Oct 09 VH
r7c6 = 8 to solve

XY chain a-d gives pincers of <5> in a + d to remove <5> from x

+-------------+--------------+--------------+
| 3 7 8 | 9 5 6 | 4 1 2 |
| 269 ...
  Topic: Oct 02 VH
TomC

Replies: 4
Views: 1603

PostForum: Daily Sudoku puzzles   Posted: Mon Oct 03, 2022 5:58 pm   Subject: Oct 02 VH
From Gianni's grid, r2c2=5 to solve

If r2c2=3, then you would get a <56> pair in box 1 and box 3 which would then leave no room for a <5> in row 7
Also if r2c2=3 you would get a <5 ...
  Topic: Oct 02 VH
TomC

Replies: 4
Views: 1603

PostForum: Daily Sudoku puzzles   Posted: Sun Oct 02, 2022 12:41 pm   Subject: Oct 02 VH
From Gianni's grid, r2c2=5 to solve

If r2c2=3, then you would get a <56> pair in box 1 and box 3 which would then leave no room for a <5> in row 7
  Topic: Oct 02 VH
TomC

Replies: 4
Views: 1603

PostForum: Daily Sudoku puzzles   Posted: Sun Oct 02, 2022 10:00 am   Subject: Oct 02 VH
Sometimes you don't have to complete all the basic moves to find a solution

At this stage, r4c7 = 1 to solve

+--------------+----------+------------------+
| 56 2 1 | 9 8 3 | 4 7 ...
  Topic: Sep 30 VH
TomC

Replies: 2
Views: 1252

PostForum: Daily Sudoku puzzles   Posted: Fri Sep 30, 2022 9:43 am   Subject: another way
r5c6 = 5 to solve

XY chain a-d gives pincers of <9> in a + d to remove <9> from x

+----------+--------------+--------+
| 34 2 7 | 5 49 a39 | 6 8 1 |
| 346 36 1 | c47 8 b3 ...
  Topic: Sep 25 VH
TomC

Replies: 1
Views: 1182

PostForum: Daily Sudoku puzzles   Posted: Sun Sep 25, 2022 10:06 am   Subject: Sep 25 VH
There is a <89> Unique Rectangle in r16c79 to avoid

Remove <3> from r1c1 to solve


+---------------+----------+-------------+
| b349 2 7 | 6 49 1 | 389 5 89 |
| 5 16 ...
 
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