HoDoKu is a Sudoku generator/solver/analyzer. It has many human-style techniques (singles, subsets, LCs, fish, wings, uniqueness, coloring, chains, and ALS) and a powerful analyzer (manage multiple solutions for one Sudoku).

Changes

This release added instant creation of new Sudokus (even very hard ones), extended print options including a booklet printer, a new simplified mouse mode, a progress indicator, and much more.

URL: HoDoKu - Sudoku for addicts