public bool Solve()
{
var puzzleIterator = new PuzzleIterator(_puzzle);
puzzleIterator.MoveNext();
ReduceCandidates();
return(SolveCellsRecursively(new PuzzleIterator(puzzleIterator)));
}
private bool FindNextUndefinedCell(PuzzleIterator iterator)
{
while (iterator.MoveNext())
{
if (iterator.Current.Value == CellValue.Unknown.Value)
{
return(true);
}
}
return(false);
}
public bool PuzzleIsCompleted()
{
var iterator = new PuzzleIterator(_puzzle);
while (iterator.MoveNext())
{
if (iterator.Current.Value == 0)
{
return(false);
}
}
return(true);
}
public void MoveNext_NotLastElement_ReturnsTrue()
{
Assert.IsTrue(_iterator.MoveNext());
}
