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Very hard Sudoku requiring new advanced solving techniques launched by ConceptisFriday, January 18, 2008
Very hard Sudoku by Conceptis are now made even harder through the introduction of particularly difficult solving methods. Starting January 1, 2008, all Classic Sudoku puzzles in the very hard levels require sophisticated recursive solving methods such as X-wing, Swordfish and other forward-looking techniques.
With this release, Conceptis continues its efforts to meet changes in the worldwide Sudoku market which has been shifting towards harder puzzles during the last year. Sudoku fans, now familiar with the traditional solving techniques, are looking for harder challenges. According to several Conceptis publishers sales of magazines and books with harder Sudoku puzzles are going up.
“Until recently there was a mainstream demand for easier and medium puzzles, but now even the very hard ones are not challenging enough for the experts” says Jochen Vetter, Conceptis Product Manager for number logic puzzles. “With the new release, even the best Sudoku champions will have a hard time solving puzzles with Locked Pairs, X-wing, XY-wing, Swordfish and other exotically named solving techniques”.
A full explanation of the X-wing solving technique can be found on Conceptis website. Note that the use of pencilmarks to solve the new very hard Sudoku puzzles now becomes absolutely essential.
The new Classic Sudoku puzzles with very hard difficulty levels are available to Conceptis publishers in the Download Center starting from Volume 06010003100. Conceptis puzzle fans will be able to print or play these puzzles online from the Free Weekly Puzzles section starting January 1, 2008.