// TODO: rename - doesnt make sense. Should be single responsibility
public static void SearchRowForSingleCandidates(this Grid grid)
{
// 3. Searching for Single Candidates: ROW
// "is there a value in any row that is only possible in one location?"
for (int row = 0; row < grid.GridSize; row++)
{
for (int value = 1; value <= grid.GridSize; value++)
{
// that value already exists in the row
if (Array.Exists(grid.GetRow(row), element => element == value))
{
continue;
}
int result = grid.CheckRowForValueInOptions(row, value);
if (result != -1)
{
grid.SolveCell(row, result, value);
grid.UpdateNeighbours(row, result);
}
}
}
}
