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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Mon Mar 08, 2010 3:09 am Post subject: Puzzle 10/03/07 (A) |
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| Code: | +-----------------------+
| . 4 . | . 2 . | 8 . . |
| 2 . 8 | . 6 9 | . . 1 |
| . 1 9 | . . . | 2 . . |
|-------+-------+-------|
| . . . | . . 8 | . . 4 |
| 9 8 . | . 1 . | . . . |
| . 7 . | 9 . 3 | . 2 8 |
|-------+-------+-------|
| 5 . 4 | . . . | . . . |
| . . . | . . 4 | . 7 . |
| . 9 . | 1 . 2 | . . . |
+-----------------------+
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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 Mar 08, 2010 6:05 am Post subject: |
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I used my typical bunch of steps.
| Quote: | gM-Wing (37) per Keith's definition
ER (6)
Hidden URs (45,19,19)
XY-Chain |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Mon Mar 08, 2010 12:36 pm Post subject: |
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Happy Monday! | Code: | *--------------------------------------------------------------------*
| 367 4 3567 | 37 2 1 | 8 3569 35679 |
| 2 35 8 | 37 6 9 | 457 345 1 |
| 367 1 9 | 8 4 5 | 2 36 367 |
|----------------------+----------------------+----------------------|
| 136 356 1356 | 2 7 8 | 169 169 4 |
| 9 8 2 | 4 1 6 | 57 35 357 |
| 4 7 16 | 9 5 3 | 16 2 8 |
|----------------------+----------------------+----------------------|
| 5 23 4 | 6 389 7 | 139 189 29 |
| 1368 236 136 | 5 389 4 | 369 7 269 |
| 3678 9 367 | 1 38 2 | 45 4568 56 |
*--------------------------------------------------------------------*
(9)r8c5 = (9-8)r7c5 = (8-1)r7c8 = (1-3)r7c7 = r8c7 - (3)r8c5;
r8c5<>3, r8c7<>9 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon Mar 08, 2010 4:04 pm Post subject: |
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My first move did the deed.
finned xy-wing 2-39 with vertex in r7c9, pincer 23 in r7c2, pincer 39 in r8c7, and fin 6 also in r8c7.
If the xy-wing is true, then r7c7|r8c123<>3
If the fin is true: (6)r8c7 - (6=23)r8c2 which forms a subset (23) in r78c2; r8c13<>3
The common deletions, r8c13<>3, can be performed to complete the puzzle.
Ted |
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