diff --git a/csharp-scrabble-challenge.Main/Program.cs b/csharp-scrabble-challenge.Main/Program.cs
index 3751555..c438a57 100644
--- a/csharp-scrabble-challenge.Main/Program.cs
+++ b/csharp-scrabble-challenge.Main/Program.cs
@@ -1,2 +1,16 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+using csharp_scrabble_challenge.Main;
+
+
+Console.WriteLine("Welcome to scrabble, write a word and get a score, {} is double points and [] is triple points");
+Console.WriteLine("qqq to quit");
+
+while (true)
+{
+    Console.WriteLine("write your word");
+    string input = Console.ReadLine();
+    if (input == "qqq") {  break; }
+    Scrabble game = new Scrabble(input);
+    int score = game.score();
+    Console.WriteLine($"your score is: {score}");
+}
+
diff --git a/csharp-scrabble-challenge.Main/Scrabble.cs b/csharp-scrabble-challenge.Main/Scrabble.cs
index c1ea013..b91d564 100644
--- a/csharp-scrabble-challenge.Main/Scrabble.cs
+++ b/csharp-scrabble-challenge.Main/Scrabble.cs
@@ -1,4 +1,5 @@
 using System;
+
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection.Metadata.Ecma335;
@@ -9,15 +10,142 @@ namespace csharp_scrabble_challenge.Main
 {
     public class Scrabble
     {
+        private string _word;
         public Scrabble(string word)
-        {            
+        {
+            
             //TODO: do something with the word variable
+            _word = word.ToUpper();
+
+
+
+
         }
 
         public int score()
         {
             //TODO: score calculation code goes here
-            throw new NotImplementedException(); //TODO: Remove this line when the code has been written
+            //throw new NotImplementedException(); //TODO: Remove this line when the code has been written
+            
+            if (_word.Length == 0) {  return 0; }
+            
+            
+
+            char[] _alphabet = { 'A', 'E', 'I', 'O', 'U', 'L', 'N', 'R', 'S', 'T', 'D', 'G', 'B', 'C', 'M', 'P', 'F', 'H', 'V', 'W', 'Y', 'K', 'J', 'X', 'Q', 'Z' };
+
+            
+
+            char[] value1 = { 'A', 'E', 'I', 'O', 'U', 'L', 'N', 'R', 'S', 'T' };
+            char[] value2 = { 'D', 'G' };
+            char[] value3 = { 'B', 'C', 'M', 'P' };
+            char[] value4 = { 'F', 'H', 'V', 'W', 'Y' };
+            char[] value5 = { 'K' };
+            char[] value8 = { 'J', 'X' };
+            char[] value10 = { 'Q', 'Z' };
+
+            int score = 0;
+            int multiplierDoubble = 1;
+            int multiplierTrippel = 1;
+            int numDouble = 0;
+            int numtrippel = 0;
+
+            char[] letters = _word.ToCharArray();
+            
+            foreach (var item in letters)
+            {
+                //digit check
+                if (char.IsDigit(item)) { return 0; }
+                if (char.IsWhiteSpace(item)) { return 0; }
+
+                int value = 0;
+
+                if (numDouble < 0 || numtrippel <0)
+                {
+                    return 0;
+                }
+
+                //double check
+                if (item == '{')
+                {
+                    
+                    numDouble++;
+                    multiplierDoubble = multiplierDoubble*2;
+                
+                }
+                if (item == '}')
+                {
+                    
+                    
+                    numDouble--;
+                    multiplierDoubble = multiplierDoubble/2;
+
+                }
+                //trippel check
+                if (item == '[')
+                {
+                    
+                    numtrippel++;
+                    multiplierTrippel = multiplierTrippel*3;
+
+                }
+                if (item == ']')
+                {
+                    
+                    
+                    numtrippel--;
+                    multiplierTrippel = multiplierTrippel/3;
+                }
+                //letter check and value assign
+                if (_alphabet.Contains(item))
+                {
+                    if (value1.Contains(item))
+                    {
+                        value = 1;
+                    }
+                    else if (value2.Contains(item))
+                    {
+                        value = 2;
+                    }
+                    else if (value3.Contains(item))
+                    {
+                        value = 3;
+                    }
+                    else if (value4.Contains(item))
+                    {
+                        value = 4;
+                    }
+                    else if (value5.Contains(item))
+                    {
+                        value = 5;
+                    }
+                    else if (value8.Contains(item))
+                    {
+                        value = 8;
+                    }
+                    else if (value10.Contains(item))
+                    {
+                        value = 10;
+                    }
+                }
+
+
+                score += value * multiplierDoubble * multiplierTrippel;
+
+
+                
+            }
+
+            if (numDouble != 0 || numtrippel != 0)
+            {
+                return 0;
+            }
+
+            return score;
+
+
         }
     }
 }
+
+
+