public void Invalid_False(
[Values(typeof(BackTrackingSolver))] Type solverType)
{
var config = new Config()
{
OrderRoot = 2
};
var game = new Game(config);
game.FillFrom(new int?[] { 2, 2 });
var solver = solverType.InvokeMember(null, BindingFlags.CreateInstance, null, null, null) as Solver;
var ret = solver.Solve(game);
Assert.False(ret);
}