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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sat Feb 27, 2010 3:30 pm Post subject: Feb 27 DB |
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To solve the February 27 DB pick the correct crayon!
Solution: If you colour in 6 it will take two steps. Colour correctly in 7, and it is a one-stepper.
Earl
| Code: |
+-------+-------+-------+
| . . 1 | . . . | . 5 . |
| . 9 . | . 5 . | . . 3 |
| . 5 . | . 8 4 | . . 2 |
+-------+-------+-------+
| 6 . . | . . 3 | 9 . . |
| . . 5 | . . . | 2 . . |
| . . 7 | 4 . . | . . 8 |
+-------+-------+-------+
| 5 . . | 3 9 . | . 4 . |
| 2 . . | . 1 . | . 3 . |
| . 1 . | . . . | 8 . . |
+-------+-------+-------+
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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: Sat Feb 27, 2010 8:26 pm Post subject: |
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For us color blind folks. | Quote: | | Remote pair 67 works too |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Sun Feb 28, 2010 9:03 am Post subject: |
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| arkietech wrote: | For us color blind folks. | Quote: | | Remote pair 67 works too |
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I do not do colors, thanks! |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Mon Mar 01, 2010 3:52 am Post subject: |
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And if you do not do colors or Remote Pairs, you can try a m-wing (which in this case is really a variation on the Remote Pair).
After basics, r1c9=67
If r1c9=6, then r2c7<>6, then r7c7=6, then r7c2=7 (due to strong link on 7); r1c2<>7
If r1c9=7; r1c2<>7.
Thus r1c2<>7 to complete the puzzle.
As an AIC: (7=6)r1c9 - (6)r2c7 = (6-7)r7c7 = (7)r7c2; r1c2<>7.
Ted |
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strmckr
Joined: 18 Aug 2009
Posts: 66
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| Posted: Mon Mar 01, 2010 9:25 am Post subject: |
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all singles + a skyscraper
| Quote: | | 7 in r1c9,r7c7 (connected by r17c2) => r2c7,r89c9<>7 |
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