bool VerifySoduku()
{
// All bytes must be 1..9
if (Sudoku.Any(x => x < 1 || x > 9))
{
return(false);
}
// Search each row, col and cell for non-uniqvue valze
for (int i = 0; i < ROW_ELEMENT_COUNT; i++)
{
// Generate sequence for row, col and cell
// Make sure to generate an index that satifies these conditions
var row = GetRowIterator(i * 9).ToHashSet();
var col = GetColIterator(i).ToHashSet();
var cell = GetCellIterator((i / 3) * ROW_ELEMENT_COUNT * 3 + i).ToHashSet();
// There must be 9 distinct values
if (Toolbox.AllDistinct(row.Select(x => Sudoku[x])) == false)
{
return(false);
}
if (Toolbox.AllDistinct(col.Select(x => Sudoku[x])) == false)
{
return(false);
}
if (Toolbox.AllDistinct(cell.Select(x => Sudoku[x])) == false)
{
return(false);
}
}
return(true);
}