public IEnumerable<int> UsedNumbersInSpace(Location location)
{
int x = location.X;
int y = location.Y;
foreach (var item in GetCol(x, y))
{
if (item.HasValue)
{
yield return item.Value;
}
}
foreach (var item in GetRow(x, y))
{
if (item.HasValue)
{
yield return item.Value;
}
}
foreach (var item in GetSquare(x, y))
{
if (item.HasValue)
{
yield return item.Value;
}
}
}
public void Set(Location location, int value)
{
_board[location.X, location.Y] = value;
for (int i = 0; i < _emptySpaces.Count; i++)
{
if (_emptySpaces[i].X == location.X && _emptySpaces[i].Y == location.Y)
{
_emptySpaces.RemoveAt(i);
return;
}
}
}
