Sudoku Solver is a Java Based application that solves the Sudoku Problem of Size 9*9. Here I have implemented a simple computational model of human solving activity. In addition different algorithms for image processing, OCR are implemented for the preprocessing of Sudoku images. The Sudoku Solving algorithm actually is able to solve Sudoku of any size but the application is bounded to only of size 9*9 due to complexity of image processing and OCR.