int ergebniss = 0 ;

void setup()
{
  Serial.begin(9600);
  //Button pin
  pinMode( 2, INPUT);
  //LEDs pins
  pinMode( 6, OUTPUT);
  pinMode( 7, OUTPUT);
  pinMode( 8, OUTPUT);
  pinMode( 9, OUTPUT);
  pinMode( 10, OUTPUT);
  pinMode( 11, OUTPUT);
  pinMode( 12, OUTPUT);
}

void loop()
{
  delay( 10 );

  if (digitalRead(2))
  {
    delay( 100 );
    ergebniss = 0 ;
    delay( 100 );
    ergebniss = random( 6 ) + 1 ;    //Get random number between 1 and 6
    Serial.print(ergebniss);
    Serial.println();
    //All LEDs LOW
    digitalWrite( 6, LOW );
    digitalWrite( 7, LOW );
    digitalWrite( 8, LOW );
    digitalWrite( 9, LOW );
    digitalWrite( 10, LOW );
    digitalWrite( 11, LOW );
    digitalWrite( 12, LOW );
    delay( 200 );


    if (( ( ergebniss ) == ( 1 ) ))
    {
      digitalWrite( 6, HIGH );
      delay( 200 );
    }
    if (( ( ergebniss ) == ( 2 ) ))
    {
      digitalWrite( 9, HIGH );
      digitalWrite( 12, HIGH );
      delay( 200 );
    }
    if (( ( ergebniss ) == ( 3 ) ))
    {
      digitalWrite( 6, HIGH );
      digitalWrite( 9, HIGH );
      digitalWrite( 12, HIGH );
      delay( 200 );
    }
    if (( ( ergebniss ) == ( 4 ) ))
    {
      digitalWrite( 7, HIGH );
      digitalWrite( 9, HIGH );
      digitalWrite( 10, HIGH );
      digitalWrite( 12, HIGH );
      delay( 200 );
    }
    if (( ( ergebniss ) == ( 5 ) ))
    {
      digitalWrite( 6, HIGH );
      digitalWrite( 7, HIGH );
      digitalWrite( 9, HIGH );
      digitalWrite( 10, HIGH );
      digitalWrite( 12, HIGH );
      delay( 200 );
    }
    if (( ( ergebniss ) == ( 6 ) ))
    {
      digitalWrite( 7, HIGH );
      digitalWrite( 8, HIGH );
      digitalWrite( 9, HIGH );
      digitalWrite( 10, HIGH );
      digitalWrite( 11, HIGH );
      digitalWrite( 12, HIGH );
      delay( 200 );
    }
  }
}