public void FillNumber(List <Cell> cells, LineNumber number, int startIndex, bool withResolve = true)
{
for (var i = startIndex; i < startIndex + number.Number; i++)
{
cells[i].Fill();
}
var lastCrossIndex = startIndex + number.Number;
if (lastCrossIndex < cells.Count)
{
cells[lastCrossIndex].Cross();
}
if (withResolve)
{
number.Resolve();
}
}