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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Mon Jul 19, 2010 4:00 am Post subject: Puzzle 10/07/19: VH |
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| Code: | +-----------------------+
| 2 . . | . . 3 | . . 4 |
| . 1 8 | . 9 4 | . . 3 |
| . . . | 6 . . | . . . |
|-------+-------+-------|
| . . 5 | . 4 . | . . 2 |
| . 2 . | 5 . 1 | 3 . . |
| 1 9 . | . 7 2 | . 4 . |
|-------+-------+-------|
| . . . | . 3 . | 2 . 1 |
| . . . | . . 8 | . . . |
| 9 3 . | . . . | 8 . 6 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Jul 19, 2010 10:26 pm Post subject: |
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| I used an XY-Wing (386) + pincer transport and a Type 1 UR (12). The puzzle was looking extremely difficult, but I kept discovering some basic moves, making me wonder if both of my moves were necessary. |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Thu Jul 22, 2010 8:06 am Post subject: |
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| I think you did need both steps Marty but maybe I'm missing something also which is quite possible! |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Jul 22, 2010 10:41 am Post subject: |
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FYI: my solver's output (with both steps being necessary)
| Code: | c6 Naked Pair <> 57 r7c6
r9 Naked Pair <> 57 r9c345
r4 b5 Locked Candidate 1 <> 9 r4c78
c7b3 Locked Candidate 2 <> 9 r1c8,r3c89
c3b7 Hidden Pair = 12 r89c3
<38+6> XY-Wing r6c4/r5c5+r6c3 <> 6 r5c13
r89c35 <12> UR Type 1.2224 r8c5<>12
r8 Naked Triple <> 567 r8c49
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