Generalized X-wings

Advanced methods and approaches for solving Sudoku puzzles


Postby Guest » Sun Apr 17, 2005 9:36 pm

Is it possible to have a 3x3 x-wing? Involving one number 3 times on three rows.

Postby Sue De Coq » Mon Apr 18, 2005 10:51 am

It is possible to generalize the X-Wings pattern further. More general patterns such as 'Swordfish' and 'Nishio' are discussed under the 'Solving Sudoku' topic on the Sudoku Programmers forum. I believe that the Pappocom software optionally supports Nishio but doesn't support Swordfish. The puzzles that appear in The Times certainly won't feature generalized X-Wings patterns.
Sue De Coq
Posts: 93
Joined: 01 April 2005

Postby chabo » Sat Jul 23, 2005 1:30 pm

Posts: 5
Joined: 23 July 2005

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