| View previous topic :: View next topic |
| Author |
Message |
Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
|
 Posted: Sat Oct 11, 2008 12:10 pm Post subject: Oct 11 DB |
 |
|
The October 11 DB offers two UR's. One is a dead end, the other solves the puzzle. Guess which one I took first?
Earl
| Code: |
+-------+-------+-------+
| . . . | 7 . . | . 5 . |
| 8 . . | . 3 6 | 9 . . |
| 4 6 . | . 5 . | . . . |
+-------+-------+-------+
| . . 2 | . . . | . . 4 |
| 3 . 9 | 6 . 2 | 1 . 5 |
| 6 . . | . . . | 2 . . |
+-------+-------+-------+
| . . . | . 9 . | . 2 6 |
| . . 6 | 3 7 . | . . 1 |
| . 7 . | . . 1 | . . . |
+-------+-------+-------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Sat Oct 11, 2008 1:04 pm Post subject: |
|
|
Yes, the two URs were very obvious and I didn't see anything to suggest either was a one trick pony. Really not that good a puzzle.
I also found a short xy-chain that was another one-tricker.
Ted |
|
| Back to top |
|
|
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
| Posted: Sat Oct 11, 2008 6:18 pm Post subject: |
|
|
| lower right UR for me |
|
| Back to top |
|
|
keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
|
| Posted: Sat Oct 11, 2008 7:30 pm Post subject: |
|
|
| Code: | +-------------+-------------+-------------+
| 19 139 13 | 7 2 4 | 6 5 8 |
| 8 2 5 | 1 3 6 | 9 4 7 |
| 4 6 7 | 8 5 9 | 3 1 2 |
+-------------+-------------+-------------+
| 7 5 2 | 9 1 3 | 8 6 4 |
| 3 48 9 | 6 48 2 | 1 7 5 |
| 6 148 148 | 5 48 7 | 2 39 39 |
+-------------+-------------+-------------+
| 15 138 138 | 4 9 58 | 7 2 6 |
| 2 48-9 6 | 3 7 58@ | 45# 89@ 1 |
| 59@ 7 48 | 2 6 1 | 45# 389 3-9 |
+-------------+-------------+-------------+ |
There is a W-wing type thing that solves it:
The cells <58> <89> in R8 form a pseudo-cell <59>. It is connected to the <59> in R9 by the strong link on <4> in C7. Taking out <9> in R8C2 and R9C9.
Either: R9C1 is <9>, or; R9C1 is <5> and then R8C8 is <9>.
Keith |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
