public void GlobalSetup()
{
// Make two rectangles
_rects = new ArrayView <bool>(Size, Size);
_rects.Fill(true);
var sects = _rects.Bounds().BisectVertically().ToArray();
foreach (var rect in sects)
{
foreach (var pos in rect.PerimeterPositions())
{
_rects[pos] = false;
}
}
}