public bool Test(bool a_all)
{
if (m_after == null)
{
return(false);
}
if (m_solution == null)
{
return(false);
}
SudokuSolutionNode node = SudokuSolutionNode.CreateRoot(m_before);
if (a_all)
{
node.StepAll();
}
else
{
node.Step(m_solution.Type);
}
SudokuSolutionNode solved_node = node.Nodes.FirstOrDefault(n => n.Solution.Equals(m_solution));
if (solved_node == null)
{
return(false);
}
return(m_after.Equals(solved_node.NextBoard));
}
private static SudokuSolutionNode LoadFromXML(XElement a_element)
{
try
{
SudokuSolutionNode node = SudokuSolutionNode.CreateRoot(SudokuBoard.LoadFromXML(a_element.Element("board")));
Debug.Assert(a_element.Element("solution").IsEmpty);
LoadNodesFromXML(a_element, node);
return(node);
}
catch
{
return(null);
}
}
