title: Sudoku solver using Algorithm X (without dancing links) in Java
body: <p>I have a mini project to create a Sudoku solver using these 2 approaches below:</p>
  
  <ol>
  <li>Algorithm X which is Donald Knuth's basic solution to the exact cover problem. </li>
  <li>The Dancing Links Approach(which is based/motivated by Algorithm X)</li>
  </ol>
  
  <p>Most examples I've searched through seems to show Algorithm X implemented with Dancing links. 
  My problem now is in creating the solution for the non dancing links approach for Algorithm X.</p>
  
  <p>Appreciate if someone could provide examples of Algorithm X(without Dancing Links) to help me tackle task 1 that I've listed above. </p>