| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Thu Mar 31, 2011 8:31 pm Post subject: Puzzle 11/03/31: ~ Difficult+ BBDB |
 |
|
| Code: | +-----------------------+
| 2 . . | . . . | . . . |
| . 9 6 | . . 3 | . 5 8 |
| . 3 4 | . . . | . . 2 |
|-------+-------+-------|
| . . . | 7 . 6 | 8 . 5 |
| . . . | . . . | . . . |
| . 7 . | 8 . 1 | 6 . 3 |
|-------+-------+-------|
| . . . | 3 . 5 | 2 . . |
| . 8 . | . . . | . 3 7 |
| . 2 5 | 4 . 8 | . 6 . |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Fri Apr 01, 2011 8:16 am Post subject: |
|
|
Three steps - with a neat little ahp!
| Quote: | skyscraper(4) r2, r6 ; r5c7<>4, r1c8<>4
hp(56)r5c12=(5)r6c1 - (5=8)r3c1 ; r5c1<>8
BUG+1 ; r4c8<>29=4 |
|
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Fri Apr 01, 2011 3:05 pm Post subject: |
|
|
This puzzle wore me out! I found various steps but all seemed to be going along the BBDB path. I finally found a four step solution that, after just reading the prior posts, is the same as Norm's original four step solution. I never even looked for a ahp() as offered by Peter; a very elegant step.
#1: skyscraper 4 r26c5; r1c8,r5c7<>4
#2: Kraken x-wing(1)r28c45 with fin (1)r7c5; r8c3<>1
(1)r7c5-(1=6)r7c2-r5c2=(6-8)r5c1=(8-5)r3c1=(5-1)r1c2=(1)r1c3;
#3: (8=3)r5c3-(3=1)r4c3-(1=9)r4c1-(9=5)r6c1-(5=8)r3c1; r1c3<>8
#4: BUG+1; r4c8=4
Ted |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Sat Apr 02, 2011 5:10 am Post subject: |
|
|
One of my typical 10-steppers.   |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
