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  Topic: Aug 3 Hard
dulaby

Replies: 3
Views: 6061

PostForum: Daily Sudoku puzzles   Posted: Tue Aug 03, 2010 5:33 pm   Subject: Aug 3 Hard
<2> has to be in row 8 .
  Topic: April 26 VH
dulaby

Replies: 12
Views: 9424

PostForum: Daily Sudoku puzzles   Posted: Mon Apr 26, 2010 4:39 pm   Subject: April 26 VH
XY-WING(35.39,59) ON BOXES 7 AND 8 IS ENOUGH
  Topic: Feb 7 VH
dulaby

Replies: 10
Views: 9028

PostForum: Daily Sudoku puzzles   Posted: Wed Feb 10, 2010 7:05 pm   Subject: Feb 7 VH
Ema,

1-9 has to be in box 9 so R8C6 is 27.

2- there is an x-wing on 3( rows 4 and 7) so 3 is out of R3C7 and R8C7

then R3C7 =24 and R8C7=47 ...
  Topic: Jan 25 VH
dulaby

Replies: 27
Views: 24515

PostForum: Daily Sudoku puzzles   Posted: Mon Feb 08, 2010 5:21 pm   Subject: january 25VH
SORRY AGAIN KRAGZY, THE XYZ ON BOXES 5 AND 6 IS:

349 ,39 AND 49
  Topic: january 25VH
dulaby

Replies: 0
Views: 4495

PostForum: Daily Sudoku puzzles   Posted: Sat Feb 06, 2010 6:16 pm   Subject: january 25VH
SORRY,XYZ--WING (BOX 2)-136
  Topic: january 25VH
dulaby

Replies: 0
Views: 4401

PostForum: Daily Sudoku puzzles   Posted: Sat Feb 06, 2010 6:15 pm   Subject: january 25VH
X-WING ON 8( COL 2 AND 5)

XYZ -WING (BOX 5)-469

XYZ -WING(BOX 1)-136
  Topic: Oct 13 vh
dulaby

Replies: 12
Views: 18927

PostForum: Daily Sudoku puzzles   Posted: Mon Oct 15, 2007 2:46 pm   Subject: Oct 13 vh
An x-wing on 2(r39) forming an xy-wing (47,48,7Cool in boxes 3 and 6 was enough for me.
  Topic: 29 May, VH
dulaby

Replies: 8
Views: 15437

PostForum: Daily Sudoku puzzles   Posted: Tue Jun 19, 2007 7:47 pm   Subject: 29 May, VH
Coruja,tudo bem? .
Repare que existe uma xy-wing em r1c3(7Cool,r4c3(37) e r4c5(3Cool e o <8> sai de r1c5 ,portanto r1c4 tem que ser <2>.Isso resolve a sua duvida?
  Topic: 5 JUne difficult -has this technique got a name?
dulaby

Replies: 24
Views: 60218

PostForum: Daily Sudoku puzzles   Posted: Wed Jun 06, 2007 1:54 pm   Subject: 5 JUne difficult -has this technique got a name?
TexCat , the xy-wing is formed by r2c3(3Cool,r2c9(36) and r9c9(6Cool so that <8> is out of r9c3,therefore r9c3 is <7>.
  Topic: 5 JUne difficult -has this technique got a name?
dulaby

Replies: 24
Views: 60218

PostForum: Daily Sudoku puzzles   Posted: Tue Jun 05, 2007 9:20 pm   Subject: 5 JUne difficult -has this technique got a name?
There is a very interesting xy-wing in boxes 1,3 and9(38,36 and 6Cool.
  Topic: April 19th
dulaby

Replies: 7
Views: 12292

PostForum: Daily Sudoku puzzles   Posted: Fri May 04, 2007 6:58 pm   Subject: April 19th
Sorry ,<9> is out of R1C4 and R1C3 has to be 9.
  Topic: April 19th
dulaby

Replies: 7
Views: 12292

PostForum: Daily Sudoku puzzles   Posted: Fri May 04, 2007 6:50 pm   Subject: April 19th
I solved that one using an xyz-wing: R3C4(179),R3C6(79) and r5c4(19) so that <9> is out of R1C3 and R1C3 has to be<9>.
  Topic: May 1, VH
dulaby

Replies: 21
Views: 33199

PostForum: Daily Sudoku puzzles   Posted: Wed May 02, 2007 5:43 pm   Subject: May 1, VH
Here are the steps I used for this one:1-) there is an xy-wing on boxes 1 and 7 so that 7 is out of r3c1. 2-) after that an x-wing appears on columns 1 and 8(on 7) .Then you can choose several ways to ...
 
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