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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Wed Nov 11, 2009 6:36 pm Post subject: Puzzle VH 09/11/11 |
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In this puzzle, the basics may be just as interesting as the advanced steps.
| Code: | +-----------------------+
| . 3 1 | . 9 6 | . 5 2 |
| 2 5 . | . 8 . | 7 . . |
| 7 . . | 1 2 . | . 9 . |
|-------+-------+-------|
| . . 8 | 2 . . | . . . |
| 3 1 7 | . 4 . | . 2 . |
| 6 . . | . . 8 | . . . |
|-------+-------+-------|
| . 6 . | . . . | . . . |
| 9 . 2 | . 1 . | . 8 . |
| 1 . . | . . . | . . 6 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Wed Nov 11, 2009 9:30 pm Post subject: |
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Wow! A rare one  | Code: | *--------------------------------------------------*
| 48 3 1 | 7 9 6 | 48 5 2 |
| 2 5 9 | 4 8 3 | 7 6 1 |
| 7 48 6 | 1 2 5 | 348 9 34 |
|----------------+----------------+----------------|
| 45 9 8 | 2 6 1 | 45 3 7 |
| 3 1 7 | 5 4 9 | 6 2 8 |
| 6 2 45 | 3 7 8 | 19 14 459 |
|----------------+----------------+----------------|
| 458 6 345 | 89 35 247 | 129 147 49 |
| 9 47 2 | 6 1 47 | 35 8 35 |
| 1 478 35 | 89 35 247 | 29 47 6 |
*--------------------------------------------------* |
| Quote: | Hidden triple 127 in r6 !!! Then a x-wing4 sets up a skyscraper 4
A one stepper --
(9=1)r6c7-(1=4)r6c8-(4)r6c3=(4)r7c3-(4=9)r7c9 => r6c9,r79c7<>9
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Nov 12, 2009 12:04 am Post subject: |
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| My grid had 345 in r9c3, so the one-stepper was a Type 2 UR on 35-4. |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Thu Nov 12, 2009 3:46 pm Post subject: |
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Another one step solution is the UR47.
| Code: | *--------------------------------------------------*
|b48 3 1 | 7 9 6 |c48 5 2 |
| 2 5 9 | 4 8 3 | 7 6 1 |
| 7 a48 6 | 1 2 5 | 348 9 34 |
|----------------+----------------+----------------|
| 45 9 8 | 2 6 1 |-45 3 7 |
| 3 1 7 | 5 4 9 | 6 2 8 |
| 6 2 45 | 3 7 8 | 19 z14 459 |
|----------------+----------------+----------------|
| 458 6 345 | 89 35 x27 | 12 y17 49 |
| 9 @47 2 | 6 1 @47 | 35 8 35 |
| 1 @478 35 | 89 35 @247 | 29 47 6 |
*--------------------------------------------------*
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UR47 marked @ is in r89c26. To prevent the deadly pattern, either r9c2=8 or r9c6=2.
(8)r9c2 - (8=4)r3c2 - (4)r1c1 = (4)r1c7 (marked a,b,c)
or
(2)r9c6 - (2=7)r7c6 - (7=1)r7c8 - (1=4)r6c8 (marked x,y,z)
These two pincers delete the 4 in r4c7 to complete the puzzle.
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Nov 12, 2009 5:02 pm Post subject: |
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| Just looking at Ted's grid, the 4 is removed from r9c6 when using the UR as a hidden. After the eliminations therefrom, multicoloring on 4 takes out the 4 from r9c2 and completes the puzzle. |
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