| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Fri Mar 12, 2010 7:22 pm Post subject: Puzzle 10/03/12 ___ BBDB as VH+ |
 |
|
| Code: | +-----------------------+
| 8 3 5 | . 1 . | . . . |
| 1 2 . | . 8 . | . . 3 |
| 9 . 4 | 3 . . | 5 . . |
|-------+-------+-------|
| . . 1 | 7 . . | . . . |
| 3 9 . | . 4 . | 7 . . |
| . . . | . . 3 | 1 2 . |
|-------+-------+-------|
| . . 3 | . 2 6 | 9 5 . |
| . . . | . . 5 | 3 . . |
| . 5 . | . . . | . . . |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site |
|
| Back to top |
|
 |
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Sat Mar 13, 2010 5:37 am Post subject: |
|
|
Four steps here.
| Quote: | XYZ (468)
Coloring (6)
XY-Loop
XY-Chain of only three cells |
|
|
| Back to top |
|
|
storm_norm
Joined: 18 Oct 2007
Posts: 1741
|
| Posted: Sat Mar 13, 2010 7:12 am Post subject: |
|
|
| Code: | +-----------------+----------------+---------------------+
| 8 3 5 | 469 1 479 | 246 4679 2467 |
| 1 2 7(6) | 5 8 479 | (46) 4679 3 |
| 9 7(6) 4 | 3 67 2 | 5 18 18 |
+-----------------+----------------+---------------------+
| 2 (46) 1 | 7 5 89 | 68-4 3 4689 |
| 3 9 68 | 2 4 1 | 7 68 5 |
| 5 47 78 | 689 69 3 | 1 2 489 |
+-----------------+----------------+---------------------+
| 47 18 3 | 148 2 6 | 9 5 1478 |
| 467 18 29 | 1489 79 5 | 3 14678 124678 |
| 467 5 29 | 1489 3 4789 | 2468 14678 124678 |
+-----------------+----------------+---------------------+
|
w-wing {4,6}; r4c7 <> 4
| Code: | +-------------+-------------------+--------------------+
| 8 3 5 | 469 1 (479) | 246 4679 267 |
| 1 2 67 | 5 8 (479) | 46 4679 3 |
| 9 67 4 | 3 (67) 2 | 5 18 18 |
+-------------+-------------------+--------------------+
| 2 46 1 | 7 5 8-9 | 68 3 4689 |
| 3 9 68 | 2 4 1 | 7 68 5 |
| 5 47 78 | 689 (69) 3 | 1 2 489 |
+-------------+-------------------+--------------------+
| 47 18 3 | 148 2 6 | 9 5 178 |
| 467 18 29 | 1489 79 5 | 3 14678 12678 |
| 467 5 29 | 1489 3 4789 | 2468 14678 12678 |
+-------------+-------------------+--------------------+
|
(9=6)r7c5 - (6=7)r3c5 - ALS[(7)r12c6 = (9)r12c6]r12c6; r4c6 <> 9 |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Sat Mar 13, 2010 2:55 pm Post subject: |
|
|
I also cheated and did not stick to VH+ only moves.
UR18 r78c24 forces pseudocell 49 in r78c4 thereby forming an ALS with 469 in r1c4
ALS469[(9)r18c4 = (6)r1c4]r178c4 - (6=7)r3c5 -(7=9)r8c5; r9c4<>9
xy-chain: (8=7)r6c3 - r6c2 = r3c2 - (7=6)r3c5 - (6=9)r6c5 - (9=8)r4c6; r6c4<>8
Looking again at the UR18 in r78c24, the 49 pseudocell in r78c2 forms a subset 479 when combined with the 79 in r8c5 and 479 in r9c6 thereby deleting 4 in r9c4
Coloring on 6 completes the puzzle.
Ted
P.S. While preparing this post I realized the steps one and three were not required to solve the puzzle, but I enjoyed both. |
|
| Back to top |
|
|
oaxen
Joined: 10 Jul 2006
Posts: 96
|
| Posted: Sun Mar 14, 2010 10:09 am Post subject: |
|
|
| There are at least four openings for successful one-stepper threads. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
