private void Initialize()
{
this.Failed = false;
for (int x = 0; x < 9; x++)
{
for (int y = 0; y < 9; y++)
{
int boxX = (int)Math.Floor(x / 3.0);
int boxY = (int)Math.Floor(y / 3.0);
int boxIndex = 18 + boxX + (boxY * 3);
if (x == 0)
{
cellsets[y] = new SudokuRow();
}
if (y == 0)
{
cellsets[9 + x] = new SudokuColumn();
}
if (null == cellsets[boxIndex])
{
cellsets[boxIndex] = new SudokuBox();
}
SudokuCell cell = new SudokuCell(x, y);
cell.FailedEvent += cell_FailedEvent;
cellsets[y].Add(cell);
cellsets[9 + x].Add(cell);
cellsets[boxIndex].Add(cell);
allCells[x, y] = cell;
}
}
}
private void ReduceBySoloBox()
{
lock (reduceLocker)
{
List <SudokuCell> checkSet = new List <SudokuCell>();
foreach (int i in Enumerable.Range(1, 9))
{
checkSet.Clear();
SudokuBox box = null;
bool isUniqueBox = true;
foreach (SudokuCell possCell in GetPossibleCellsByValue(i))
{
if (possCell.IsSolved)
{
isUniqueBox = false;
break;
}
if (null == box)
{
box = possCell.box;
}
else
{
if (box != possCell.box)
{
isUniqueBox = false;
break;
}
}
checkSet.Add(possCell);
}
if (isUniqueBox && checkSet.Count > 1)
{
lock (setLocker)
{
// remove these values from other cells in the set
checkSet[0].box.RemoveValuesFromSet(i, checkSet);
}
}
}
}
}
