public override bool HeuristicApplies(TekBoard board, TekField field)
{
Region.Clear();
Region.AddField(field);
foreach (TekField field2 in field.Influencers)
{
Region.AddField(field2);
foreach (TekField field3 in field.Influencers)
{
if (field != field2 && field != field3 && field2 != field3)
{
if (Region.IsTriplet(field3))
{
Region.AddField(field3);
AddHeuristicFields(Region.Fields);
AddValues(Region.GetTotalPossibleValues());
// determine affected fields
foreach (TekField f in field.CommonInfluencers(field2, field3))
{
foreach (int value in f.PossibleValues)
{
if (HeuristicValues.Contains(value))
{
AddAffectedField(f);
break;
}
}
}
if (AffectedFields.Count > 0)
{
return(true);
}
else
{
Reset();
}
}
}
}
Region.RemoveField(field2);
}
return(false);
}
