private void EliminateNakedPairFromOthersInBlock(int[,] sudokuBoard, int givenRow, int givenCol)
{
if (!HasNakedPairInBlock(sudokuBoard, givenRow, givenCol))
{
return;
}
var sudokuMap = _sudokuMapper.Find(givenRow, givenCol);
for (int row = sudokuMap.StartRow; row <= sudokuMap.StartRow + 2; row++)
{
for (int col = sudokuMap.StartCol; col <= sudokuMap.StartCol + 2; col++)
{
if (sudokuBoard[row, col].ToString().Length > 1 && sudokuBoard[row, col] != sudokuBoard[givenRow, givenCol])
{
EliminateNakedPair(sudokuBoard, sudokuBoard[givenRow, givenCol], row, col);
}
}
}
}
private int GetPossibilitiesInBlock(int[,] sudokuBoard, int givenRow, int givenCol)
{
int[] possibilities = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var sudokuMap = _sudokuMapper.Find(givenRow, givenCol);
for (int row = sudokuMap.StartRow; row <= sudokuMap.StartRow + 2; row++)
{
for (int col = sudokuMap.StartCol; col <= sudokuMap.StartCol + 2; col++)
{
if (IsValidSingle(sudokuBoard[row, col]))
{
possibilities[sudokuBoard[row, col] - 1] = 0;
}
}
}
return(Convert.ToInt32(String.Join(string.Empty, possibilities.Select(p => p).Where(p => p != 0))));
}
