| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Sat Nov 07, 2009 8:19 pm Post subject: Puzzle VH 09/11/07 |
 |
|
Anyone interested in a VH puzzle?
| Code: | VH puzzles can be solved using these techniques:
Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidates 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH: BUG+1, UR Type 1, X-Wing, XY-Wing
|
| Code: | +-----------------------+
| . . 7 | . . 6 | 9 . . |
| . 4 2 | 9 . 1 | . 5 . |
| 9 8 . | . . 2 | . 1 4 |
|-------+-------+-------|
| . 5 . | 2 . . | . . . |
| . . . | . . . | . 9 . |
| 6 7 9 | . . 8 | . . . |
|-------+-------+-------|
| 8 . . | . . . | 6 . . |
| . 6 1 | . 8 . | . 2 5 |
| . . 5 | . . . | . 8 9 |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
|
| Posted: Sun Nov 08, 2009 8:46 am Post subject: |
|
|
Another one? | Quote: | | ur 35 => r6c9<>1 (it's not a type 1) |
|
|
| Back to top |
|
|
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
| Posted: Sun Nov 08, 2009 6:05 pm Post subject: |
|
|
| again, another way to avoid the UR 35 is to see that in rows 3 and 6, there are only 5 places that the UR candidates exist. the UR cells themselves, and r6c9. if r6c9 wasn't a 3, this would force the UR to exist in r36c45 and this is a NO NO. therefore r6c9 has to be a 3. |
|
| 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
