Swapped around to no detriment but I have ordered them in what I subjectively believe to be an
Their use - unless perhaps one reorders the strategies.
They areĪll 'necessary' examples in the sense that no easier strategy will by-pass the requirement for The examples in the list above illustrate some of the many strategies available. Version history here Original version 1.42 12th Jan 2008 There have been a number of miner fixes to the solver in February and March not worthy of a version increment. Added a special kind of Sudoku X Pointng Pair previously found by Simple Colouring. Restored Unique Rectangles to the Sudoku X solver. Cookies also retain the difference between clues and solved cells as well. Should you loose the page it will restore The solver now automatically saves the board every time it changes.
#16X16 SUDOKU WITH DIAGONAL MANUAL#
You still have a manual save and reload but I have redesigned the way cookies are stored and puzzles loaded. On the small board for number entry I have added an option that automatically clears off candidates as numbers are added.Īlso, changes to the small board are automatically saved. New in version 2.01 (August 25th 2014)Īdded a clue+solved cell count added a show bi-value cells checkbox. Many thanks to all the people who have done so and helped improve this solver. There is a newįEEDBACK form with a column displaying comments and questions. I am now working independently on puzzle creation.Īll feedback, comments, arguments, bug reports and strategy ideas are welcome. Please check this stratgy guide if you want to use the advanced strategies. There are pitfalls, for example, with Unique Rectangles, which rely on a certain formations. All the normal rules and logical posibilities apply to Sudoku X with Solver they are checked before rows, columns and boxes. For tough puzzles and above the diagonals must be checked. You will want to scan them in case you see an easy 'single'. However, the extra constraints mean that the puzzle creator can leave less clues than normal sudoku.įor the easier Sudoku X puzzles you won't really find a necessary example of a deduction based on the diagonals although You can look along the diagonals (marked with a darked X on th board) and makeĭeductions. To eliminate and find solutions to cells. These extra constraints allow you the puzzle solver to dervice new conclusions about candidates The difference is that in Sudoku X the two diagonals are known to contain You discover the logical solutions for this puzzle. Sudoku X is a great variant of normal Sudoku and this solver is an extension of my Sudoku Solver to help
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