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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sat Apr 04, 2009 2:39 pm Post subject: April 4 DB |
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The April 4 DB has many paths. A coloring in <4> opens another coloring in <4> which will do it. Probably doesnt count as a single bullet.
No easy answers
Earl
| Code: |
+-------+-------+-------+
| 2 7 . | 8 . 6 | . . 5 |
| 5 . 6 | . 2 . | . . 9 |
| . 9 . | . . . | . . . |
+-------+-------+-------+
| 7 . . | 2 . . | 1 . . |
| . 6 . | . . . | . 5 . |
| . . 2 | . . 5 | . . 7 |
+-------+-------+-------+
| . . . | . . . | . 3 . |
| 3 . . | . 4 . | 9 . 2 |
| 6 . . | 3 . 7 | . 8 1 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
Last edited by Earl on Wed Apr 08, 2009 5:30 pm; edited 1 time in total |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Apr 04, 2009 4:23 pm Post subject: |
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| Quote: | | Remote pair <14>, X-wing <8>, XY-wing -348. |
Keith |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sat Apr 04, 2009 10:41 pm Post subject: |
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| Quote: | Probably doesnt count as a single bullet.
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buckshot?? |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sat Apr 04, 2009 11:21 pm Post subject: |
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Earl,
you were on the right track to see one of the single step moves.
notice the 4's in box 4, especially the group at BC and the group in DE
then notice their relationship with the 4 at F and the 4 at A
| Code: | .------------------.------------------.------------------.
| 2 7 F14 | 8 9 6 | 3 G14 5 |
| 5 8 6 |1-4I 2 3 | 7 H14 9 |
| 14 9 3 | 5 7 14 | 6 2 8 |
:------------------+------------------+------------------:
| 7 345 E458 | 2 368 489 | 1 69 34 |
| 1489 6 D148 | 7 138 1489 | 2 5 34 |
|C149 B134 2 |A14 136 5 | 8 69 7 |
:------------------+------------------+------------------:
| 148 14 7 | 9 18 2 | 5 3 6 |
| 3 15 158 | 6 4 18 | 9 7 2 |
| 6 2 9 | 3 5 7 | 4 8 1 |
'------------------'------------------'------------------' |
its a grouped coloring move which can be extended via the 4's at G and H
to eliminate the 4 at I
(4)A = (4)BC - (4)DE = (4)F - (4)G = (4)H; I cannot be 4. |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Sun Apr 05, 2009 7:04 pm Post subject: |
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I used a combination of colouring and ERs on 1 and 4.
Earl: Just a suggestion, but it might be better if you didn't give the solutions with the opening puzzle. Kinda takes away the challenge of using that solution.
G'Day |
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