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Puzzle: AD111028

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Oct 29, 2011 1:33 am    Post subject: Puzzle: AD111028 Reply with quote
No advanced moves.
Code:
Puzzle: AD111028
+-------+-------+-------+
| . 5 8 | . . 2 | . . . |
| . . . | 7 . . | . . . |
| 7 . 2 | 1 . . | 4 8 . |
+-------+-------+-------+
| 9 . . | . 1 . | 8 . 6 |
| . . . | . . . | . . . |
| 6 . 1 | . 9 . | . . 4 |
+-------+-------+-------+
| . 2 4 | . . 1 | 7 . 3 |
| . . . | . . 5 | . . . |
| . . . | 4 . . | 6 2 . |
+-------+-------+-------+

Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Sat Oct 29, 2011 6:00 am    Post subject: Reply with quote
Easy - No sets required. Lots of naked singles.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Oct 29, 2011 9:30 am    Post subject: Reply with quote
It comes down to finding R3C9<>9.

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Oct 29, 2011 10:06 pm    Post subject: Reply with quote
Pretty good puzzle for a basics only.

Quote:
It comes down to finding R3C9<>9.

Prior to that I had to find the 9s in column 6 locked in box 2; r1c4<>9. Then the 9s in row 1 were locked in box 3 to set r3c9<>9.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Oct 30, 2011 2:14 am    Post subject: Reply with quote
Marty R. wrote:
Pretty good puzzle for a basics only.

Yes, I failed to do it without pencil marks.

Keith
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Pat



Joined: 23 Feb 2010
Posts: 207
PostPosted: Sun Oct 30, 2011 8:49 am    Post subject: re: puzzle from 2011.Oct.28 advert Reply with quote
arkietech wrote:

keith wrote:

    .58..2......7.....7.21..48.9...1.8.6.........6.1.9...4.24..17.3.....5......4..62.

    [ play ]
Code:

 . 5 8 | . . 2 | . . .
 . . . | 7 . . | . . .
 7 . 2 | 1 . . | 4 8 .
-------+-------+------
 9 . . | . 1 . | 8 . 6
 . . . | . . . | . . .
 6 . 1 | . 9 . | . . 4
-------+-------+------
 . 2 4 | . . 1 | 7 . 3
 . . . | . . 5 | . . .
 . . . | 4 . . | 6 2 .



Easy - No sets required. Lots of naked singles.
    really ??

    needs "hidden" duo
    ( or if you prefer -- "naked" quartet )



keith wrote:

    It comes down to finding
      r3c9 not 9
    yes

    and this involves 3 stages of working with 9s --
      (9) b7\r9
      --> (9) b8\c4 [ or c6\b2 ]
      --> (9) r1\b3

    i wonder if anyone would prefer to reduce these 3 moves into just 1 move -- a Swordfish !
      (9) c236\r239
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