FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in          Games  Calendar Log in to check your private messages    Algorithm for identification of the XY wing from the Sudoku          Sudoku Programmers Forum Index -> Solving sudoku View previous topic :: View next topic   Author Message IUSUT Joined: 11 Feb 2007 Posts: 6 : Location: romania Items Posted: Sun Mar 25, 2007 10:33 pm    Post subject: Algorithm for identification of the XY wing from the Sudoku XY wing is a powerful technique of elimination, which has the disadvantage that the third cells of the chain can be laborious identified. Specially the beginners meet with difficulties in finding XY wing model, and insistently solicit help on web sites. In the study „Algorithm for identification of the XY wing from the Sudoku grid” attached to the site: /sudoku/org/uk/discus/messages/2/3787.html?1174859479 I propose a simple method for identification of the XY wing, which I submit to your analysis. I'm using now almost exclusively the graphic variant with nonagon, in order to identify XY models from grids. Mihail Iusut, Romania Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         Sudoku Programmers Forum Index -> Solving sudoku All times are GMT Page 1 of 1   Jump to: Select a forum Sudoku----------------Solving sudokuSetting sudokuProgramming sudokuThe mathematics of sudokuExotic sudoku Library----------------PuzzlesSoftwareSudoku elsewhere Not sudoku----------------Random thoughtsForum feedback  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum   Powered by phpBB © 2001, 2005 phpBB Group Igloo Theme Version 1.0 :: Created By: Andrew Charron