/// <summary>
/// Attempt to advance the <see cref="SudokuPuzzle"/> by finding regions (i.e. blocks, rows, or columns)
/// where only one <see cref="Cell"/> has not been solved, then solving that <see cref="Cell"/>
/// </summary>
/// <param name="puzzle">The <see cref="SudokuPuzzle"/> being advanced</param>
/// <param name="candidateCells">A list of <see cref="Cell"/>s, each of which is the single unsolved cell in a region</param>
/// <returns>Whether the <see cref="SudokuPuzzle"/> ends up being advanced</returns>
protected override bool MessWithPuzzle(SudokuPuzzle puzzle, List <Cell> candidateCells)
{
bool hasAdvanced = false;
for (int i = 0; i < candidateCells.Count; ++i)
{
if (this.SolveCell(candidateCells[i], puzzle.GetAllAllowedValues()))
{
hasAdvanced = true;
}
}
return(hasAdvanced);
}
public void TestAllowedValues()
{
int dimension = 3;
List <int> cellValues = new List <int>();
for (int i = 0; i < dimension * dimension * dimension * dimension; ++i)
{
cellValues.Add(0);
}
SudokuPuzzle puzzle = new SudokuPuzzle(dimension, cellValues);
List <int> allowedValues = puzzle.GetAllAllowedValues();
for (int i = 0; i < dimension * dimension; ++i)
{
Assert.IsTrue(allowedValues[i] == i + 1);
}
}