dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Search found 453 matches
dailysudoku.com Forum Index
Author Message
  Topic: Jan 08 VH
dongrave

Replies: 6
Views: 563

PostForum: Daily Sudoku puzzles   Posted: Sat Jan 08, 2022 1:55 pm   Subject: Jan 08 VH
I think so Tom. There are 5's locked candidates in column 6 removing the 5 from r8c4. (Or you could use the hidden pair 1-3 in column 4 or the 256 naked triple in the same column.)
  Topic: VH December 20th
dongrave

Replies: 5
Views: 2076

PostForum: Daily Sudoku puzzles   Posted: Mon Dec 20, 2021 3:28 pm   Subject: VH December 20th
Earl, Don't you have to apply the X-Wing on 4's in cols 5 and 8 before the 56-7 XY-Wing opens up? Thanks, Don.
  Topic: VH+ 120821
dongrave

Replies: 4
Views: 1854

PostForum: Other puzzles   Posted: Fri Dec 10, 2021 6:27 pm   Subject: VH+ 120821
After basics:
+--------------+---------------+-------------+
| 8 39 2 | 7 5 139 | 4 6 13 |
| 4 39 1 | 289 289 6 | 59 7 358 |
| 6 5 7 | 1489 489 139 | 19 2 ...
  Topic: A VH rated too hard by Draw/Play 110521
dongrave

Replies: 8
Views: 2672

PostForum: Other puzzles   Posted: Sat Nov 06, 2021 9:19 pm   Subject: A VH rated too hard by Draw/Play 110521
LOL!!! Blind spots indeed! I went through the motions with Draw/Play just to see if I could pinpoint it's weakness. It clearly has trouble identifying Naked Triples, or at least in this case it had tr ...
  Topic: Nov 03 VH
dongrave

Replies: 6
Views: 2014

PostForum: Daily Sudoku puzzles   Posted: Wed Nov 03, 2021 3:04 pm   Subject: Nov 03 VH
I used the 8 X -Wing as the 1st step and then the 356 XYZ-Wing with pivot at r8c7 (-3r9c7) as the 2nd step.
  Topic: Extreme 103021
dongrave

Replies: 3
Views: 2753

PostForum: Other puzzles   Posted: Sat Oct 30, 2021 11:48 pm   Subject: Extreme 103021
Thanks for the puzzle Immp! I enjoyed that.

After basics:
+---------------+--------------+-------------+
| 256 569 8 | 29 34 1 | 256 34 7 |
| 3 679 4 | 279 5 69 | 26 1 ...
  Topic: VH+ 102521
dongrave

Replies: 6
Views: 2779

PostForum: Other puzzles   Posted: Wed Oct 27, 2021 1:25 pm   Subject: VH+ 102521
Nice solutions you guys!
  Topic: All Hail Danny (4)
dongrave

Replies: 12
Views: 2952

PostForum: Other puzzles   Posted: Sat Oct 23, 2021 4:48 pm   Subject: All Hail Danny (4)
I found a slightly shorter chain than my original one.

2*r2c3-(2=7)r2c5-(27=5)r2c7-(5=2)r4c7-(2=1|5)r4c13-(2*5=9)r5c3-(59=2)r5c1-[(2=4*)r5c4 -(2=5)r9c1]-(4*5=3)r9c4-(34*=7)r7c4-r8c4=r8c9-(7=2)r6c9- ...
  Topic: All Hail Danny (4)
dongrave

Replies: 12
Views: 2952

PostForum: Other puzzles   Posted: Sat Oct 23, 2021 12:25 pm   Subject: All Hail Danny (4)
Well done dongrave!

Was it a relative of this one ?

-2r1c4=r5c4-r6c5=r6c89-(2=5)r4c7-(5)r56c8=r3c8-r3c2=r8c2-r8c5=r1c5 means r1c4<>5 and r1c5<>2

Thanks Mogulmeister! No, yours ...
  Topic: All Hail Danny (4)
dongrave

Replies: 12
Views: 2952

PostForum: Other puzzles   Posted: Fri Oct 22, 2021 4:07 pm   Subject: All Hail Danny (4)
Thanks for the puzzle Mohulmeister! Here's the grid after basics:

+--------------+--------------+-----------------+
| 7 8 6 | 235 235 9 | 4 1 23 |
| 4 3 25 | 6 27 1 ...
  Topic: VH+ 100521
dongrave

Replies: 3
Views: 2277

PostForum: Other puzzles   Posted: Wed Oct 06, 2021 7:41 pm   Subject: VH+ 100521
Thanks for the puzzle immp! I settled for a 2-step solution and each step used a chain with a contradiction. I hope some others post their solutions!
  Topic: VH+ 100321
dongrave

Replies: 3
Views: 2610

PostForum: Other puzzles   Posted: Mon Oct 04, 2021 6:56 pm   Subject: VH+ 100321
After basics:

+----------------+--------------+---------------+
| 5 128 1278 | 478 9 6 | 1278 3 248 |
| 4 9 278 | 3 27 1 | 278 6 5 |
| 3 1268 12678 | 5 247 27 ...
  Topic: One from Ted
dongrave

Replies: 8
Views: 5999

PostForum: Other puzzles   Posted: Mon Sep 13, 2021 7:20 pm   Subject: One from Ted
Wow! Nice job Clement!
  Topic: One from Ted
dongrave

Replies: 8
Views: 5999

PostForum: Other puzzles   Posted: Sat Sep 11, 2021 2:23 pm   Subject: One from Ted
This one was too tough for me! I couldn't even find the possibility of a single step solution! I did see some back door solutions but of course they're no help when you're trying to solve it properl ...
  Topic: VH+ 090521
dongrave

Replies: 6
Views: 3915

PostForum: Other puzzles   Posted: Mon Sep 06, 2021 3:22 pm   Subject: VH+ 090521
I used the chain: 7r6c2-[(7=4*)r5c1 -(7=5)r6c9]-(57=2)r6c1-(24*=9)r1c1-(9=4)r1c2-(4=7)r8c2 contradiction => r6c2 <> 7; stte.
  Topic: very hard rated by draw and play
dongrave

Replies: 5
Views: 3656

PostForum: Other puzzles   Posted: Sat Sep 04, 2021 3:46 pm   Subject: very hard rated by draw and play
Hi Clement, I think you got tricked by the wrong rating! Your grid can be solved using just basics. There's a hidden pair 29 in row 2 (corrected on 09/05/21, it previously said 'column 2') which lea ...
  Topic: VH+ 082521
dongrave

Replies: 19
Views: 7373

PostForum: Other puzzles   Posted: Thu Aug 26, 2021 3:19 pm   Subject: VH+ 082521
Starting with TomC's grid, I used the following chain:
(9=6)r7c5 - (6=7)r7c7 - (67=4*)r7c8 - (4=2)r7c1 - (2=6)r2c1 - r2c78 = r1c8 - (4*6=3)r9c8 - (3=9)r9c2 => r7c3 <> 9; stte.
  Topic: A challenge for p&p
dongrave

Replies: 6
Views: 7301

PostForum: Other puzzles   Posted: Sun Aug 15, 2021 9:22 pm   Subject: A challenge for p&p
I enjoyed that! But am I right that it can be solved without any VH or VH+ moves? Let me know - because I'll redo it if I screwed up!
  Topic: VH+ 080421
dongrave

Replies: 7
Views: 3940

PostForum: Other puzzles   Posted: Sat Aug 07, 2021 9:23 pm   Subject: VH+ 080421
Starting with Mogulmeister's grid I used the following chain:
4r3c9-(4=2)r4c9-[(2=3)r4c6-(23=4*)r4c7 -(24=7)r7c9]-(4*7=2)r8c7-(2=3)r8c2-r3c2=r3c6 contradiction (i.e. 3r34c6) => r3c9 <> 4; st ...
  Topic: More Danny
dongrave

Replies: 5
Views: 4278

PostForum: Other puzzles   Posted: Wed Jul 14, 2021 8:36 pm   Subject: More Danny
After basics:
+-------------+---------------+---------------+
| 7 3 2 | 9 5 1 | 4 6 8 |
| 6 9 5 | 4 7 8 | 1 2 3 |
| 4 1 8 | 2 36 36 | 7 5 ...
 
Page 1 of 23 Goto page 1, 2, 3 ... 21, 22, 23  Next
All times are GMT
Jump to:  


Powered by phpBB © 2001, 2005 phpBB Group