public void SetNotTest()
{
var s = new SearchState();
foreach (var i in Enumerable.Range(1, 9))
{
Assert.IsTrue(s.CanBe(8, 8, i), $"Can't be {i} : {Math.Pow(2, i)}");
}
s.SetNot(8, 8, 6);
foreach (var i in Enumerable.Range(1, 9).Where(n => n != 6))
{
Assert.IsTrue(s.CanBe(8, 8, i), $"Can be {i}");
}
Assert.IsFalse(s.CanBe(8, 8, 6), $"Can't be 6");
s.SetNot(8, 8, 1);
s.SetNot(8, 8, 2);
s.SetNot(8, 8, 3);
s.SetNot(8, 8, 4);
s.SetNot(8, 8, 7);
s.SetNot(8, 8, 8);
s.SetNot(8, 8, 9);
Assert.AreEqual(s[8, 8], 5);
}