public bool Push(Step step)
{
if (this.StepList.Exists(s => s.Equals(step)))
{
return false;
}
this.StepList.Add(step);
return true;
}
protected bool Equals(Step other)
{
return this.Row == other.Row && this.Column == other.Column && this.Number == other.Number ;
}
private static void SetNumber(Chessboard chessboard, Step step)
{
chessboard.GetCell(step.Row, step.Column).SetNumber(step.Number);
}