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 ReduceBySoloSet()
{
lock (reduceLocker)
{
List <SudokuCell> checkSetRow = new List <SudokuCell>();
List <SudokuCell> checkSetCol = new List <SudokuCell>();
foreach (int i in Enumerable.Range(1, 9))
{
checkSetRow.Clear();
checkSetCol.Clear();
SudokuRow row = null;
SudokuColumn col = null;
bool isUniqueRow = true;
bool isUniqueCol = true;
foreach (SudokuCell possCell in GetPossibleCellsByValue(i))
{
if (possCell.IsSolved)
{
isUniqueCol = false;
isUniqueRow = false;
break;
}
if (null == col)
{
col = possCell.col;
row = possCell.row;
}
if (isUniqueRow)
{
if (row != possCell.row)
{
isUniqueRow = false;
}
checkSetRow.Add(possCell);
}
if (isUniqueCol)
{
if (col != possCell.col)
{
isUniqueCol = false;
}
checkSetCol.Add(possCell);
}
}
if (isUniqueCol && checkSetCol.Count > 1)
{
lock (setLocker)
{
// remove these values from other cells in the set
checkSetCol[0].col.RemoveValuesFromSet(i, checkSetCol);
}
}
if (isUniqueRow && checkSetRow.Count > 1)
{
lock (setLocker)
{
// remove these values from other cells in the set
checkSetRow[0].row.RemoveValuesFromSet(i, checkSetRow);
}
}
}
}
}