| View previous topic :: View next topic |
| Author |
Message |
immpy
Joined: 06 May 2017
Posts: 571
|
 Posted: Sat Jun 03, 2017 2:20 pm Post subject: A truly hard Hard puzzle...... |
 |
|
A little story with this one.....
My co-worker friend does puzzles like these all the time.....usually a Hard rating by our standards. But this one stumped him. He asked me to give it a try to help him get going.....what a puzzle.
I worked at it for hours, wrangling every elimination, using any tool that would work.....this is a good one, and it has some VH techniques in the mix. Try it out and enjoy.......a true hardest of the Hard, I'd say.....
| Code: |
+-------+-------+-------+
| . . . | . 2 6 | . . 9 |
| . . 7 | . . . | . 3 . |
| 2 . 6 | . 7 . | 5 . . |
+-------+-------+-------+
| 7 . . | 2 1 . | . 8 . |
| . . . | . 8 . | . . . |
| . 1 . | . 4 3 | . . 7 |
+-------+-------+-------+
| . . 4 | . 6 . | 1 . 3 |
| . 6 . | . . . | 8 . . |
| 9 . . | 8 5 . | . . . |
+-------+-------+-------+
|
Play this puzzle online at the Daily Sudoku site
...he got if from a newspaper in NW Indiana, do not know the date, but from 2017........ |
|
| Back to top |
|
 |
Ajò Dimonios
Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
|
| Posted: Sat Jun 03, 2017 5:16 pm Post subject: |
|
|
| Code: |
+-----------------+--------------+----------------+
| 13458 3458 1358 | 145 2 6 | 47 147 9 |
| 145 45 7 | 145 9 8 | 26 3 246 |
| 2 9 6 | 3 7 14 | 5 14 8 |
+-----------------+--------------+----------------+
| 7 345 359 | 2 1 59 | 3469 8 456 |
| 3456 2345 2359 | 679 8 579 | 2349 245 1 |
| 568 1 2589 | 69 4 3 | 29 25 7 |
+-----------------+--------------+----------------+
| 58 2578 4 | 79 6 279 | 1 2579 3 |
| 15 6 125 | 1479 3 12479 | 8 24579 245 |
| 9 237 123 | 8 5 1247 | 247 6 24 |
+-----------------+--------------+----------------+
|
Play this puzzle online at the Daily Sudoku site
If 8 in R1C3 is true=>contradiction=>No 8 in the second column=>-8 R1C3
5 fin x-wing (line 6, line 7)-5 R8C1
swordfish (column 3, column 6, column 9) -5 R8C8, -5 R4C2,-5R5C128. Stte |
|
| Back to top |
|
|
Ajò Dimonios
Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
|
| Posted: Sat Jun 03, 2017 6:34 pm Post subject: |
|
|
Sorry
If 8 in R1C3 is true=>contradiction=>two 5 in the first column (R7C1,R8C1)=>-8 R1C3 |
|
| Back to top |
|
|
JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
|
| Posted: Sat Jun 03, 2017 7:13 pm Post subject: |
|
|
4 singles; Claiming(6R4); L9C8=6; HP(26)r2c79: 3 singles
Pointing(5B2) -> NT(679)r457c4 -> HP(79)r8c68 -> HP(14)r39c6 -> L7C6=2 -> Claiming(2C8) -> L6C7=9; singles to the end |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Sat Jun 03, 2017 8:20 pm Post subject: |
|
|
| JC Van Hay wrote: | 4 singles; Claiming(6R4); L9C8=6; HP(26)r2c79: 3 singles
Pointing(5B2) -> NT(679)r457c4 -> HP(79)r8c68 -> HP(14)r39c6 -> L7C6=2 -> Claiming(2C8) -> L6C7=9; singles to the end |
Yeah, I ran it through Helmut's Helper and was surprised to see it solved with basics. |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
