diff --git a/Advent.csproj b/Advent.csproj
index bcf5c81..bccac4f 100644
--- a/Advent.csproj
+++ b/Advent.csproj
@@ -13,6 +13,9 @@
     <None Update="Day10\input.txt">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Update="Day13\input2.txt">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="Day13\input.txt">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
diff --git a/Day13/Day13.cs b/Day13/Day13.cs
index a014e92..ef6ec64 100644
--- a/Day13/Day13.cs
+++ b/Day13/Day13.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 
@@ -7,13 +8,15 @@ namespace Advent
 {
     public static class Day13
     {
+        private static Dictionary<Tuple<long, long>, long> _tiles;
+
         public static void Execute()
         {
-            var lines = File.ReadAllLines(@".\Day13\input.txt");
+            var lines = File.ReadAllLines(@".\Day13\input2.txt");
 
-            var game = new IntcodeComputer(lines[0], 0);
+            var game = new IntcodeComputer(lines[0], 0, OnInput);
 
-            var tiles = new Dictionary<Tuple<long, long>, long>();
+            _tiles = new Dictionary<Tuple<long, long>, long>();
 
             while (!game.Halted)
             {
@@ -21,10 +24,78 @@ namespace Advent
                 var y = game.Execute(0);
                 var tile = game.Execute(0);
 
-                tiles[new Tuple<long, long>(x, y)] = tile;
+                _tiles[new Tuple<long, long>(x, y)] = tile;
             }
 
-            Console.WriteLine(tiles.Values.Count(t => t == 2));
+            var score = _tiles[new Tuple<long, long>(-1, 0)];
+
+            Console.WriteLine(score);
+
+            //Console.WriteLine(_tiles.Values.Count(t => t == 2));
+        }
+
+        private static long OnInput()
+        {
+            //DrawScreen(_tiles);
+
+            var ballPos = _tiles.First(t => t.Value == 4);
+            var paddlePos = _tiles.First(t => t.Value == 3);
+
+            if (ballPos.Key.Item1 > paddlePos.Key.Item1)
+                return 1;
+
+            if (ballPos.Key.Item1 < paddlePos.Key.Item1)
+                return -1;
+
+            return 0;
+
+            //Console.WriteLine();
+            //Console.WriteLine();
+            //Console.Write("Input: ");
+
+            //var key = Console.ReadKey();
+
+            //if (key.Key == ConsoleKey.LeftArrow)
+            //    return -1;
+
+            //if (key.Key == ConsoleKey.RightArrow)
+            //    return 1;
+
+            //return 0;
+        }
+
+        private static void DrawScreen(Dictionary<Tuple<long, long>, long> tiles)
+        {
+            foreach (var tile in tiles)
+            {
+                if (tile.Key.Item1 == -1 && tile.Key.Item2 == 0)
+                {
+                    Debug.WriteLine($"Score: {tile.Value}");
+                    continue;
+                }
+
+                Console.SetCursorPosition((int)tile.Key.Item1, (int)tile.Key.Item2);
+
+                var c = ' ';
+
+                switch (tile.Value)
+                {
+                    case 1:
+                        c = 'W';
+                        break;
+                    case 2:
+                        c = 'B';
+                        break;
+                    case 3:
+                        c = 'P';
+                        break;
+                    case 4:
+                        c = 'O';
+                        break;
+                }
+
+                Console.Write(c);
+            }
         }
     }
 }
diff --git a/Day13/input2.txt b/Day13/input2.txt
new file mode 100644
index 0000000..2fa2c0e
--- /dev/null
+++ b/Day13/input2.txt
@@ -0,0 +1 @@
+2,380,379,385,1008,2415,504308,381,1005,381,12,99,109,2416,1101,0,0,383,1102,1,0,382,20101,0,382,1,20102,1,383,2,21102,1,37,0,1106,0,578,4,382,4,383,204,1,1001,382,1,382,1007,382,37,381,1005,381,22,1001,383,1,383,1007,383,24,381,1005,381,18,1006,385,69,99,104,-1,104,0,4,386,3,384,1007,384,0,381,1005,381,94,107,0,384,381,1005,381,108,1105,1,161,107,1,392,381,1006,381,161,1101,-1,0,384,1105,1,119,1007,392,35,381,1006,381,161,1101,0,1,384,20102,1,392,1,21102,22,1,2,21102,1,0,3,21101,0,138,0,1106,0,549,1,392,384,392,21002,392,1,1,21102,1,22,2,21102,1,3,3,21102,1,161,0,1105,1,549,1102,0,1,384,20001,388,390,1,20101,0,389,2,21101,0,180,0,1106,0,578,1206,1,213,1208,1,2,381,1006,381,205,20001,388,390,1,21002,389,1,2,21102,205,1,0,1105,1,393,1002,390,-1,390,1102,1,1,384,21002,388,1,1,20001,389,391,2,21102,228,1,0,1106,0,578,1206,1,261,1208,1,2,381,1006,381,253,20101,0,388,1,20001,389,391,2,21101,253,0,0,1105,1,393,1002,391,-1,391,1102,1,1,384,1005,384,161,20001,388,390,1,20001,389,391,2,21101,279,0,0,1106,0,578,1206,1,316,1208,1,2,381,1006,381,304,20001,388,390,1,20001,389,391,2,21101,0,304,0,1106,0,393,1002,390,-1,390,1002,391,-1,391,1102,1,1,384,1005,384,161,21001,388,0,1,21001,389,0,2,21101,0,0,3,21102,1,338,0,1105,1,549,1,388,390,388,1,389,391,389,20102,1,388,1,20102,1,389,2,21101,0,4,3,21101,0,365,0,1105,1,549,1007,389,23,381,1005,381,75,104,-1,104,0,104,0,99,0,1,0,0,0,0,0,0,286,16,19,1,1,18,109,3,22102,1,-2,1,22102,1,-1,2,21101,0,0,3,21101,0,414,0,1106,0,549,21202,-2,1,1,22101,0,-1,2,21102,429,1,0,1105,1,601,2101,0,1,435,1,386,0,386,104,-1,104,0,4,386,1001,387,-1,387,1005,387,451,99,109,-3,2106,0,0,109,8,22202,-7,-6,-3,22201,-3,-5,-3,21202,-4,64,-2,2207,-3,-2,381,1005,381,492,21202,-2,-1,-1,22201,-3,-1,-3,2207,-3,-2,381,1006,381,481,21202,-4,8,-2,2207,-3,-2,381,1005,381,518,21202,-2,-1,-1,22201,-3,-1,-3,2207,-3,-2,381,1006,381,507,2207,-3,-4,381,1005,381,540,21202,-4,-1,-1,22201,-3,-1,-3,2207,-3,-4,381,1006,381,529,21201,-3,0,-7,109,-8,2105,1,0,109,4,1202,-2,37,566,201,-3,566,566,101,639,566,566,2102,1,-1,0,204,-3,204,-2,204,-1,109,-4,2106,0,0,109,3,1202,-1,37,594,201,-2,594,594,101,639,594,594,20101,0,0,-2,109,-3,2106,0,0,109,3,22102,24,-2,1,22201,1,-1,1,21101,449,0,2,21102,721,1,3,21101,888,0,4,21102,1,630,0,1105,1,456,21201,1,1527,-2,109,-3,2106,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,2,2,0,2,2,2,0,2,2,2,0,2,2,2,2,0,0,2,2,0,2,0,0,2,0,2,2,2,2,0,2,0,0,1,1,0,0,2,0,0,0,2,0,2,2,0,0,0,2,2,2,0,0,0,2,2,2,0,2,2,0,0,0,0,0,0,0,2,0,0,1,1,0,0,2,0,2,0,2,0,2,0,2,2,0,2,0,2,0,2,2,2,0,0,2,2,2,0,2,0,2,2,2,2,0,0,0,1,1,0,0,2,0,0,0,0,2,0,0,0,2,0,0,2,2,2,2,2,2,2,0,0,0,0,2,2,2,2,2,0,2,2,2,0,1,1,0,2,2,2,0,0,2,2,2,2,2,2,0,2,0,0,0,2,0,0,2,2,2,0,2,0,2,0,2,0,0,2,2,2,0,1,1,0,0,2,2,2,2,0,2,0,2,0,0,2,0,2,2,2,2,2,0,2,0,2,2,0,2,0,2,2,2,0,2,2,0,0,1,1,0,0,0,0,2,2,2,2,2,0,0,2,0,0,0,0,2,0,2,2,0,2,2,2,2,2,0,2,2,0,0,0,2,2,0,1,1,0,2,0,2,2,2,0,0,0,0,0,0,0,2,2,2,2,2,2,2,0,2,0,2,2,0,2,0,2,0,0,0,0,0,0,1,1,0,0,0,2,2,0,0,2,0,0,2,2,2,2,2,0,0,2,2,2,2,0,2,0,0,0,2,2,2,0,2,2,2,2,0,1,1,0,0,0,0,0,2,0,2,2,2,0,0,2,2,2,0,2,2,2,0,0,2,2,0,2,2,2,2,0,0,2,2,2,0,0,1,1,0,0,2,0,2,2,2,2,0,0,0,0,2,0,0,0,2,0,0,0,0,2,0,0,0,0,2,2,0,0,0,2,2,2,0,1,1,0,0,2,0,2,2,2,2,0,0,0,0,0,2,2,2,2,2,2,0,0,2,2,0,2,0,0,2,2,2,2,2,2,0,0,1,1,0,0,2,0,2,0,0,0,0,0,0,2,0,0,0,0,0,0,0,2,2,2,2,0,2,0,2,2,2,2,0,2,0,2,0,1,1,0,0,2,2,2,0,2,2,2,2,0,2,0,2,0,2,0,0,0,0,0,0,2,2,0,2,2,2,2,0,0,2,2,0,0,1,1,0,0,0,2,0,2,2,2,0,0,2,2,2,0,2,0,0,2,2,2,0,2,0,2,2,0,2,2,2,2,0,0,0,0,0,1,1,0,2,2,0,2,2,0,2,0,2,2,2,2,0,2,2,0,2,2,2,0,2,0,0,0,2,0,2,0,0,0,0,0,2,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,72,24,61,53,70,95,17,71,27,25,75,75,9,41,47,87,93,47,92,11,93,87,16,9,94,89,5,46,23,64,39,44,23,93,27,28,10,82,54,70,26,84,86,88,64,20,6,8,8,27,46,80,6,57,15,35,55,86,30,72,88,50,49,11,31,76,89,50,24,13,71,45,35,46,57,14,84,36,1,41,48,87,67,92,83,28,41,7,33,60,66,16,46,42,49,47,53,27,60,84,63,32,23,17,67,61,56,7,31,68,43,50,37,36,56,6,65,35,9,56,15,32,64,68,7,52,30,15,55,71,57,97,31,60,37,35,85,96,59,14,83,76,47,71,65,39,37,22,77,90,60,38,29,72,11,49,40,20,26,19,80,83,58,67,50,94,79,62,86,57,76,44,36,37,55,67,6,26,34,63,80,33,64,45,39,93,70,26,4,71,79,71,21,70,31,48,58,50,54,74,53,31,89,78,57,70,52,70,85,68,5,1,55,12,25,74,81,36,3,3,8,97,9,62,58,80,45,87,45,17,80,62,25,63,29,97,84,55,11,28,86,55,39,81,93,48,67,46,62,79,58,63,87,66,89,23,81,95,22,41,29,87,30,14,67,94,13,7,32,56,66,29,89,77,17,54,12,82,59,83,89,65,72,56,78,97,5,24,20,27,5,37,66,68,77,16,9,66,41,43,18,94,84,86,42,25,47,72,7,8,93,28,68,6,75,55,44,36,15,71,9,49,66,80,77,81,13,7,73,1,86,17,80,36,12,57,42,1,50,87,74,37,60,91,92,46,75,1,17,83,65,49,61,44,13,69,36,90,10,35,61,53,66,11,62,33,14,58,24,82,11,68,48,20,96,68,56,57,77,71,24,41,46,81,43,55,96,30,69,63,23,86,55,83,1,23,88,88,20,66,39,23,26,2,21,80,57,68,3,88,68,1,76,67,84,63,89,45,84,20,97,29,97,7,92,84,65,49,31,93,63,30,89,96,93,37,15,97,30,69,39,1,22,68,5,75,38,39,62,19,24,30,38,36,27,93,1,3,27,39,69,3,86,42,92,81,18,37,16,94,1,94,47,81,51,25,11,6,25,28,78,50,89,39,6,41,27,31,22,17,33,76,2,36,64,79,14,81,91,11,45,12,17,57,70,17,49,54,45,83,71,68,25,89,62,4,55,73,77,98,1,1,36,11,12,78,56,71,96,55,85,71,49,57,68,14,76,63,22,60,79,11,61,49,39,36,33,59,73,85,8,38,3,21,65,21,31,69,54,85,38,26,5,73,43,87,15,44,80,10,92,54,75,96,26,53,84,37,1,76,53,77,68,13,67,64,11,31,32,86,85,71,98,37,53,45,3,3,87,20,20,36,95,87,41,74,23,76,78,19,45,57,41,89,1,11,42,85,74,13,3,72,19,20,64,25,51,82,97,45,55,37,86,2,25,40,26,78,76,16,11,14,36,96,89,90,64,96,79,32,17,47,79,80,53,19,26,59,74,54,53,58,32,48,9,64,96,3,20,88,1,92,44,45,10,4,67,91,81,26,40,89,83,53,83,84,18,53,6,94,51,59,27,38,41,63,2,8,48,64,4,90,88,21,14,37,68,46,1,73,21,14,41,65,81,97,56,90,24,30,81,68,19,16,47,65,53,68,26,54,26,56,15,25,83,89,20,92,4,49,37,42,5,54,7,27,43,36,85,41,59,44,33,93,45,46,23,19,52,20,87,25,85,21,22,20,43,70,35,33,27,17,23,9,56,33,53,55,22,91,69,73,20,23,86,95,14,24,59,60,37,48,94,69,86,63,39,50,84,85,46,65,4,42,97,12,66,37,89,47,29,59,25,47,74,44,24,22,73,45,60,70,11,40,83,49,95,17,9,85,2,27,90,60,32,87,62,36,91,38,19,92,2,33,30,17,43,13,81,53,93,75,14,67,97,95,53,20,63,5,45,63,84,92,65,65,70,33,11,79,82,89,36,59,90,74,6,74,17,96,40,72,89,84,51,17,40,42,504308
diff --git a/IntcodeComputer.cs b/IntcodeComputer.cs
index 2e4231e..dbf4e8c 100644
--- a/IntcodeComputer.cs
+++ b/IntcodeComputer.cs
@@ -19,16 +19,20 @@ namespace Advent
         private long _instructionPointer;
         private long _output;
         private long _relativeBase;
+        private InputDelegate _onInput;
 
         public bool Halted { get; private set; }
 
-        public IntcodeComputer(string memoryString, long phase)
+        public delegate long InputDelegate();
+
+        public IntcodeComputer(string memoryString, long phase, InputDelegate onInput = null)
         {
             _memory = new long[5000];
 
             memoryString.Split(',').Select(long.Parse).ToArray().CopyTo(_memory, 0);
 
             _phase = phase;
+            _onInput = onInput;
         }
 
         private long GetValue(long parameter, ParameterMode mode)
@@ -96,6 +100,9 @@ namespace Advent
 
                         _setPhase = true;
 
+                        if (_onInput != null)
+                            inputValue = _onInput();
+
                         SetValue(inputValue, _memory[_instructionPointer + 1], mode1);
 
                         _instructionPointer += 2;