private void SimpleExclusion(IEnumerable <SudokuField> fields)
{
SudokuField.Certainty toSetTo = SudokuField.Certainty.CanNotBe;
if (Guess == true)
{
toSetTo = SudokuField.Certainty.CanNotBeOnGuess;
}
List <int> filledInNumbers = new List <int>();
foreach (SudokuField field in fields)
{
int?number = field.GetNumber();
if (number != null)
{
filledInNumbers.Add((int)number);
}
}
foreach (SudokuField field in fields)
{
SudokuField.ChangeType newChange = field.SetNumbers(filledInNumbers, toSetTo);
ChangeController(newChange);
}
}
private void ChangeController(SudokuField.ChangeType change)
{
if (change == SudokuField.ChangeType.Excluding)
{
ChangedExcluding = true;
}
else if (change == SudokuField.ChangeType.FiguredOut)
{
Changed = true;
}
}
private void ExclusionOnOnlyPositionsThatFit(List <SudokuField> fields)
{
if (boardProperty == BoardProperty.NineByNine || boardProperty == BoardProperty.SixBySix || boardProperty == BoardProperty.FourByFour || boardProperty == BoardProperty.TwoByTwo)
{
SudokuField.Certainty toSetTo = SudokuField.Certainty.CanNotBe;
if (Guess == true)
{
toSetTo = SudokuField.Certainty.CanNotBeOnGuess;
}
List <int> numbersNeeded = new List <int>();
for (int i = boardProperties[boardProperty].MinNumber; i <= boardProperties[boardProperty].MaxNumber; i++)
{
numbersNeeded.Add(i);
}
for (int i = 0; i < fields.Count; i++)
{
int?number = fields[i].GetNumber();
if (number != null)
{
numbersNeeded.Remove((int)number);
fields.Remove(fields[i]);
i--;
}
}
foreach (SudokuField field in fields)
{
List <int> numbersField = (List <int>)field.GetNumbers();
numbersField.RemoveAll(number => !numbersNeeded.Contains(number));
foreach (SudokuField fieldToCheckAgainst in fields)
{
if (field != fieldToCheckAgainst)
{
IEnumerable <int> numbersCoveredByOtherField = fieldToCheckAgainst.GetNumbers();
numbersField.RemoveAll(number => numbersCoveredByOtherField.Contains(number));
if (numbersField.Count() == 0)
{
break;
}
}
}
if (numbersField.Count() >= 1)
{
List <int> numbersToExclude = (List <int>)field.GetNumbers();
numbersToExclude.RemoveAll(number => numbersField.Contains(number));
SudokuField.ChangeType newChange = field.SetNumbers(numbersToExclude, toSetTo);
ChangeController(newChange);
}
}
}
}
