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  Topic: x-wings, xy-wings
MartinDick

Replies: 9
Views: 42820

PostForum: Daily Sudoku puzzles   Posted: Wed Jul 19, 2006 12:54 pm   Subject: Of course
Of course; thank you.
  Topic: x-wings, xy-wings
MartinDick

Replies: 9
Views: 42820

PostForum: Daily Sudoku puzzles   Posted: Wed Jul 19, 2006 4:17 am   Subject: x-wing
Tracy’s explanation to Maggie Rose is perfect for me.

Now, what confuses me, is when Ian says, “There is another x-wing on 6 at R38, C36.” In row 8 there are four possible sixes, and I thought the r ...
  Topic: X-wing and unique rectangle
MartinDick

Replies: 1
Views: 14582

PostForum: Daily Sudoku puzzles   Posted: Tue Jul 18, 2006 4:44 pm   Subject: X-wing and unique rectangle
I am fairly new and a fairly slow learner. I see the examples of x-wings and unique rectangles, but I could use a simple definition and a simple explanation of the logic behind each.

Thank You,
 
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