private void ScanRegion(RegionQueue regions, MutablePuzzle puzzle, Region region)
{
var placedDigits = region.GetPlacedDigits();
for (int i = 1; i <= Puzzle.LineLength; i++)
{
var digit = SudokuValues.FromHumanValue(i);
if (placedDigits.HasAnyOptions(digit))
{
continue;
}
var positions = region.GetPositions(digit);
if (positions.IsSingle)
{
var index = positions.ToIndex();
var coords = region.GetCoordinate(index);
var update = new CellUpdate(digit.Invert(), coords);
puzzle.RemoveOptions(update);
regions.Enqueue(RegionType.Row, coords.Row);
regions.Enqueue(RegionType.Column, coords.Column);
regions.Enqueue(RegionType.Box, coords.Box);
}
}
}
private void ScanRegion(RegionQueue regions, MutablePuzzle puzzle, Region region)
{
var placedDigits = region.GetPlacedDigits();
for (int i = 0; i < Puzzle.LineLength; i++)
{
var cell = region[i];
if (!cell.IsSingle && cell.HasAnyOptions(placedDigits))
{
var coords = region.GetCoordinate(i);
puzzle.RemoveOptions(coords, placedDigits);
var newCell = cell.RemoveOptions(placedDigits);
if (newCell.IsSingle)
{
// since we have placed a digit we must
// scan these regions again
regions.Enqueue(RegionType.Row, coords.Row);
regions.Enqueue(RegionType.Column, coords.Column);
regions.Enqueue(RegionType.Box, coords.Box);
}
}
}
}
public void ApplyToRegionQueue(RegionQueue queue)
{
queue.Enqueue(RegionType.Row, _update.Coordinate.Row);
queue.Enqueue(RegionType.Column, _update.Coordinate.Column);
queue.Enqueue(RegionType.Box, _update.Coordinate.Box);
}