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form2.show;
form1.hide;                    

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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Unit2;

type
  TFormStart = class(TForm)
    Button1: TButton;
    RadioButtonSingle: TRadioButton;
    RadioButtonLan: TRadioButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FormStart: TFormStart;

implementation

{$R *.dfm}

procedure TFormStart.Button1Click(Sender: TObject);
begin
     if RadioButtonSingle.Checked=true then
     begin
        {Hier stehen die Befehle, um ein Spiel an einem Rechner zu starten}
        Form1.show;
        FormStart.Hide;
     end;
     if RadioButtonLan.Checked=true then
     begin
        {Hier stehen die Befehle, um ein Spiel über Lan zu starten.}
     end;
end;

end.                    

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unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, Grids;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    ButtonStart: TButton;
    StringGrid1: TStringGrid;
    Image1:TImage;
    Label4: TLabel;
    Label6: TLabel;
    Label5: TLabel;
    Label8: TLabel;
    buttonmatchclose: TButton;
    ButtonClose: TButton;
    Label9: TLabel;
    StringGrid2: TStringGrid;
    Label10: TLabel;
    Label11: TLabel;
    Label7: TLabel;
    procedure Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure Image1Click(Sender: TObject);
    procedure ButtonStartClick(Sender: TObject);
    procedure Kreis(Sender:TObject);
    procedure X(Sender:TObject);
    procedure rundebeendet(Sender:TObject);
    procedure feldzeichnen(Sender:TObject);
    procedure buttonmatchcloseClick(Sender: TObject);
    procedure ButtonCloseClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Feldreset(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  spieler1,spieler2 :String;
  i: Integer;
implementation

uses unit3;