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  Topic: Wings (rated too hard) 091618
dongrave

Replies: 3
Views: 4893

PostForum: Other puzzles   Posted: Sun Sep 16, 2018 6:11 pm   Subject: Wings (rated too hard) 091618
Hmm, I've used 3 wings so far and it's still not solved! And I doubt that there's a single step solution for this one. Can one of you guys prove me wrong?
  Topic: Helmut's Advanced 2018-08-18
dongrave

Replies: 2
Views: 4778

PostForum: Other puzzles   Posted: Sun Aug 19, 2018 7:22 pm   Subject: Helmut's Advanced 2018-08-18
Ha! Wow, nice solution Clement! What's the 'length' of that chain? 4? Wow, much shorter than my solution! Good one!
  Topic: Challenging 081318
dongrave

Replies: 5
Views: 6988

PostForum: Other puzzles   Posted: Sun Aug 19, 2018 5:37 pm   Subject: Challenging 081318
I enjoyed that one too! I had the same grid after basics as Gianni. Then I used the chain (8-5)r2c1=(5-6)r1c2=r1c7-(6=3)r7c7-(3=8)r9c8-r9c4=r2c4 contradiction => r2c1<>8.
  Topic: Helmut's Advanced 2018-08-18
dongrave

Replies: 2
Views: 4778

PostForum: Other puzzles   Posted: Sun Aug 19, 2018 3:39 pm   Subject: Helmut's Advanced 2018-08-18
Another enjoyable puzzle yesterday on Helmut's site.
+-------+-------+-------+
| 8 . 2 | . 1 . | . . . |
| . 4 . | . . . | 6 . 1 |
| . 7 . | 8 . 4 | . . . |
+-------+-------+-------+
...
  Topic: Is Marty still on this site?
dongrave

Replies: 0
Views: 3959

PostForum: Other puzzles   Posted: Sat Aug 11, 2018 9:33 pm   Subject: Is Marty still on this site?
I haven't heard from Marty in a long time. Does he still come to this site? He helped me a lot and I became a lot more interested in Sudoku puzzles thanks to him! I miss you Marty!
  Topic: A.Sudoku 4/08/2018
dongrave

Replies: 4
Views: 6186

PostForum: Other puzzles   Posted: Mon Aug 06, 2018 8:06 pm   Subject: A.Sudoku 4/08/2018
Oh, of course! Very interesting! I didn't think of that! Thanks!
  Topic: A.Sudoku 4/08/2018
dongrave

Replies: 4
Views: 6186

PostForum: Other puzzles   Posted: Sun Aug 05, 2018 5:35 pm   Subject: A.Sudoku 4/08/2018
Sorry, this one's too tough for me! Here's the grid after basics I think.
+----------------+------------+----------------+
| 1256 1268 1256 | 4 9 3 | 257 1578 2578 |
| 345 48 9 | 1 ...
  Topic: Challenging Puzzle 072518
dongrave

Replies: 6
Views: 7144

PostForum: Other puzzles   Posted: Wed Jul 25, 2018 11:13 pm   Subject: Challenging Puzzle 072518
Thanks immpy! I can't get the puzzle from Helmut's site tonight! (I kept getting an error about 'resource limit exceeded'.) Now I've got one to do.
  Topic: Helmut's Advanced 07/21/18
dongrave

Replies: 3
Views: 5369

PostForum: Other puzzles   Posted: Sun Jul 22, 2018 2:14 pm   Subject: Helmut's Advanced 07/21/18
Wow! Dan's solution sure is a lot shorter than mine! I was all over the map.
+-----------+-------------+-------------+
| 3 8 4 | 25 6 15 | 7 129 259 |
| 29 1 5 | 27 3 79 | 4 ...
  Topic: 21 Jui VH
dongrave

Replies: 3
Views: 5198

PostForum: Daily Sudoku puzzles   Posted: Sat Jul 21, 2018 9:41 pm   Subject: 21 Jui VH
Thanks Clement! Well now we clearly know where Sam's bug lies! He's obviously not exhausting all possible basic moves before also examining advanced moves. You can't do that when you're rating the ...
  Topic: Helmut's Advanced 07/21/18
dongrave

Replies: 3
Views: 5369

PostForum: Other puzzles   Posted: Sat Jul 21, 2018 4:58 pm   Subject: Helmut's Advanced 07/21/18
Today's Helmut Advanced puzzle.
+-------+-------+-------+
| . 8 . | . . . | 7 . . |
| . 1 5 | . 3 . | 4 . . |
| . . . | . . . | . . 3 |
+-------+-------+-------+
| . . . | 1 4 . | 3 8 ...
  Topic: 21 Jui VH
dongrave

Replies: 3
Views: 5198

PostForum: Daily Sudoku puzzles   Posted: Sat Jul 21, 2018 4:50 pm   Subject: 21 Jui VH
I think I solved it with just basics. Unless I screwed up there was a naked 246 in r148c4 to get to the following grid.
+-----------------+--------------+---------------+
| 1248 5 7 | 24 9 ...
  Topic: Helmut's 07/12/18 Advanced
dongrave

Replies: 5
Views: 7273

PostForum: Other puzzles   Posted: Wed Jul 18, 2018 12:57 am   Subject: Helmut's 07/12/18 Advanced
Kudos to you dongrave for your chain/loop savvy. I don't even pretend to get a grip on those things...lol. Different strokes for different folks, as they say. Much preferred the W-Wing approach as per ...
  Topic: Helmut's 07/12/18 Advanced
dongrave

Replies: 5
Views: 7273

PostForum: Other puzzles   Posted: Sat Jul 14, 2018 12:25 pm   Subject: Helmut's 07/12/18 Advanced
Grid after basics.

+-------------+-------------+----------------+
| 123 23 12 | 4 67 67 | 9 5 8 |
| 9 4 6 | 1 5 8 | 7 2 3 |
| 8 5 7 | 2 3 9 | 4 ...
  Topic: Helmut's 07/12/18 Advanced
dongrave

Replies: 5
Views: 7273

PostForum: Other puzzles   Posted: Thu Jul 12, 2018 11:13 pm   Subject: Helmut's 07/12/18 Advanced
Another one that was a lot of fun! I used my favorite method again to solve it.

+-------+-------+-------+
| . . . | . . . | . . . |
| 9 . . | . 5 . | . 2 3 |
| . . 7 | 2 3 9 | . 1 . |
...
  Topic: Helmut's VH 2018-07-09
dongrave

Replies: 8
Views: 8748

PostForum: Other puzzles   Posted: Thu Jul 12, 2018 11:08 pm   Subject: Helmut's VH 2018-07-09
Thanks Clement! Finally, I think I've finally got the hang of it. Thanks for your help - and thanks to Marty for his help too!
  Topic: Helmut's VH 2018-07-09
dongrave

Replies: 8
Views: 8748

PostForum: Other puzzles   Posted: Thu Jul 12, 2018 2:18 am   Subject: Helmut's VH 2018-07-09
Nice solutions! Thanks guys! Mine was as follows: (9=8)r8c7-r3c7=(8-3)r2c9=(3-9)r2c6=r2c8=>r8c8<>9. (Tell me if my Eureka notation has any errors!)
  Topic: Helmut's VH 2018-07-09
dongrave

Replies: 8
Views: 8748

PostForum: Other puzzles   Posted: Wed Jul 11, 2018 1:19 am   Subject: Helmut's VH 2018-07-09
I am so enjoying Helmut's VH (or Advanced) or 1sudoku.com's Evil on days that this site doesn't have a VH.

Helmut's VH 2018-07-09.

+-------+-------+-------+
| . . 8 | 4 . . | . . . |
| 5 ...
  Topic: 1sudoku Evil puzzle
dongrave

Replies: 7
Views: 7542

PostForum: Other puzzles   Posted: Wed Jul 11, 2018 1:04 am   Subject: 1sudoku Evil puzzle
Thanks Clement! I found a one step solution. You want to see it? (I think I got the notation right.) Let me know if I screwed up the notation (or the entire solution!)
(5=2)r8c4-(2=679)r456c4-(9= ...
  Topic: 1sudoku Evil puzzle
dongrave

Replies: 7
Views: 7542

PostForum: Other puzzles   Posted: Mon Jul 09, 2018 8:11 pm   Subject: 1sudoku Evil puzzle
Thanks Clement! I found a one step solution. You want to see it? (I think I got the notation right.) Let me know if I screwed up the notation (or the entire solution!)
(5=2)r8c4-(2=679)r456c4-(9= ...
 
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