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  Topic: Apr 18 VH

Replies: 2
Views: 9165

PostForum: Daily Sudoku puzzles   Posted: Mon Apr 22, 2024 4:30 pm   Subject: Apr 18 VH
It is an XY-Wing. if you highlight ZeroAssoluto's quote, there are that and a couple of other solution
  Topic: VH+ 012724

Replies: 3
Views: 14040

PostForum: Other puzzles   Posted: Sun Jan 28, 2024 7:30 pm   Subject: VH+ 012724
I used an XY-chain to anchoured at r7c2 & r3c3 to eliminate 9 at r7c3.

Starting at r7c2 up c2, across r5, down c7, across r9, up c8, across r3 to r3c3.
  Topic: Jan 21 VH

Replies: 2
Views: 9921

PostForum: Daily Sudoku puzzles   Posted: Fri Jan 26, 2024 2:16 am   Subject: Jan 21 VH
Hi Greenvilleguy

That solution was in ZeroAssoluto's solutions. His solutions are hidden, but if you hold and shift in his solution box they become available. He calls a Y-wing an XY-wing but they ...
  Topic: VH++ 122123

Replies: 2
Views: 18956

PostForum: Other puzzles   Posted: Mon Dec 25, 2023 11:18 pm   Subject: VH++ 122123
I found a finned x-wing that eliminated 8 from r3c12. Basic steps thereafter. Hope I didn't make a mistake!
  Topic: VH++ 112923

Replies: 4
Views: 34126

PostForum: Other puzzles   Posted: Thu Dec 07, 2023 10:47 pm   Subject: VH++ 112923
I used a candidate colouring method that keys off bivalued cells though the solution is similar to dongraves. The steps I took:

- The 9s in c37 eliminate 9 in r8c9 in a finned x-wing thus creating ...
  Topic: VH++ 101323

Replies: 3
Views: 37858

PostForum: Other puzzles   Posted: Thu Oct 19, 2023 5:47 pm   Subject: VH++ 101323
I used a colouring technique.

In r1c3, I set the 5 to Green & the 8 to Blue. As 8 is a strong link in r1 so the 8 in r1c7 is Green with the 6 being Blue. In c2 the 5 is also a strong link so in ...
  Topic: Puzzle 11/06/05: ~ VH

Replies: 5
Views: 127766

PostForum: Puzzles by daj   Posted: Tue Jun 20, 2023 12:58 am   Subject: Puzzle 11/06/05: ~ VH
Going over these old puzzles.

Went got multiple 15 Remote Pairs on this one!
  Topic: 16-04-2023 VH

Replies: 5
Views: 38876

PostForum: Other puzzles   Posted: Sat Apr 22, 2023 9:06 pm   Subject: 16-04-2023 VH
Using my pen & pencil method, starting approximately where dongrave has the puzzle, I used the "3D Medusa" method. Starting with a base on Row 6, I eventually found a contradiction with ...
  Topic: 01-04-2023-vh+

Replies: 9
Views: 51884

PostForum: Other puzzles   Posted: Sun Apr 02, 2023 8:13 pm   Subject: 01-04-2023-vh+
Excellent puzzle! Didn't solve; going to try again.

Please post more if you have any!
  Topic: Apr 02 VH

Replies: 2
Views: 17818

PostForum: Daily Sudoku puzzles   Posted: Sun Apr 02, 2023 8:11 pm   Subject: Apr 02 VH
Not that challenging this time. I used an XY-Wing.
  Topic: VH++ 033123

Replies: 2
Views: 30040

PostForum: Other puzzles   Posted: Sat Apr 01, 2023 7:03 pm   Subject: VH++ 033123
fx-wing -3 r4c9
xy-chain -3 r4c2, r5c8
xy-wing -5 r4c2
  Topic: VH+ 030223

Replies: 4
Views: 37682

PostForum: Other puzzles   Posted: Fri Mar 10, 2023 7:57 pm   Subject: VH+ 030223
Several Steps:
I) X-wing removing 9s from r1c1, r9c1, r9c6
II) xy-chain with anchors at r8c2 & r9c7 removing 1s from r9c1, r8c7
III) Finned x-wing removing 1 from r5c9
IV) W-wing removing 3s f ...
  Topic: VH 121921

Replies: 4
Views: 42670

PostForum: Other puzzles   Posted: Wed Feb 22, 2023 6:46 pm   Subject: VH 121921
A w-wing with 6s in column 5 removes 9s from r8c4 & r4c6
  Topic: VH++ 021323

Replies: 4
Views: 35457

PostForum: Other puzzles   Posted: Tue Feb 14, 2023 8:06 pm   Subject: VH++ 021323
I used two steps:
An 246 xyz-wing removes 6 from r3c9.
An xy-chain with the ends at r9c8 & r3c9 removes 4 from r1c8
  Topic: VH+ 010723

Replies: 4
Views: 40856

PostForum: Other puzzles   Posted: Mon Jan 23, 2023 2:11 am   Subject: VH+ 010723
I used a chain of 8s anchored at r2c3 & r8c2 which removes 8s from r3c2 & r7c3. The later gives an 8 at r2c3 by virtue of column 3.

That led to a contradiction of 4s in box 7. That filled o ...
  Topic: Nov 25 VH

Replies: 2
Views: 11796

PostForum: Daily Sudoku puzzles   Posted: Fri Nov 25, 2022 6:46 pm   Subject: Nov 25 VH
I used a swordfish to remove 5 from r1c4
  Topic: VH+ 110222

Replies: 3
Views: 35487

PostForum: Other puzzles   Posted: Thu Nov 03, 2022 6:28 pm   Subject: VH+ 110222
I used a finned xwing to remove 7&8 from r8c5. Remote pairs also works.
A x-chain to remove 2 from r8c9
A xyz wing to remove 8 from r8c9
  Topic: Oct 19 VH

Replies: 1
Views: 9492

PostForum: Daily Sudoku puzzles   Posted: Wed Oct 19, 2022 10:58 pm   Subject: Oct 19 VH
I used an xwing on 4
A UR on 3&9
and the finned xwing on 7
  Topic: Extreme 103021

Replies: 4
Views: 44754

PostForum: Other puzzles   Posted: Thu Oct 13, 2022 7:04 pm   Subject: Extreme 103021
I used an xy-wing to eliminate 2s from r2c4, r1c7

Then an xy-chain anchored at r3c3 & r2c4 to eliminate 7 at r3c4
  Topic: VH+ 100822

Replies: 14
Views: 80316

PostForum: Other puzzles   Posted: Tue Oct 11, 2022 10:45 pm   Subject: VH+ 100822

Unfortunately I have thrown away my paper & pen sheet on this puzzle. Recalling best I can from reviewing your grid, I suspect I used a skyscraper on 2s from columns 3&4 which gi ...
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