Sudoku Ace - 1.5

Sudoku Ace is new puzzle software based on Sudoku--a Japanese game initially introduced in 1986. A tough Sudoku puzzle may take a few hours to solve. This is where the benefit of software comes in. Since Sudoku Ace isn't pen and paper, there is an unlimited number of corrections that can be done. Also the program is able to generate millions of different random Sudoku grids and has Hint and Solve features to ease the solution process of even the most difficult puzzles.

Version 1.5 implements more efficient solution algorithm.