public void ChangeMainEngine(UCIEngine engine)
        {
            this.Game.DefaultEngine.Pause();
            this.Game.SwapPlayersIfNeeded();
            if (this.Game.IsDefaultEngine(engine))
            {
                this.Game.DefaultEngine.Resume();
                return;
            }

            this.Game.Clock.Stop();
            this.Game.PreviousPonderMove = "";
            this.Game.DefaultEngine.Close();
            this.Game.DefaultEngine = engine;
            AnalysisUc.ChangeEngine(engine);
            AnalysisUc.TabText = engine.EngineTitle;

            if (this.Game.GameMode == App.Model.GameMode.HumanVsEngine)
            {
                if (this.Game.CurrentPlayer.IsWhite)
                {
                    this.Game.Player2.Engine = this.Game.DefaultEngine;
                }
                else
                {
                    this.Game.Player1.Engine = this.Game.DefaultEngine;
                }

                ChessBoardUc.SetEvents();
                this.Game.GameData.Black1 = this.Game.DefaultEngine.EngineName;
                this.RefreshGameInfo();
            }
        }