private bool RemoveFromOtherBoxesInRegion(MutablePuzzle puzzle, Region region, SudokuValues value, int boxIndex)
{
var anyChanged = false;
for (int i = 0; i < Puzzle.LineLength; i++)
{
var coords = region.GetCoordinate(i);
if (coords.Box == boxIndex)
{
continue;
}
var cell = region[i];
if (!cell.IsSingle && cell.HasAnyOptions(value))
{
var update = new CellUpdate(value, coords);
puzzle.RemoveOptions(update);
anyChanged = true;
}
}
return(anyChanged);
}
public void RemoveOptions(CellUpdate update) => RemoveOptions(update.Coordinate, update.RemovedOptions);