diff --git a/script.js b/script.js
index bbe8a29..de085e0 100644
--- a/script.js
+++ b/script.js
@@ -1,4 +1,100 @@
+var rollDice = function () {
+  // Generate a decimal from 0 through 3, inclusive of 0 but not 1
+  var randomDecimal = Math.random() * 3;
+  // Remove the decimal with the floor operation.
+  // This will be an integer from 0 to 2 inclusive.
+  var randomInteger = Math.floor(randomDecimal);
+  return randomInteger;
+};
+
+var winRecord = 0;
+// Generate a random dice number for required guesses in row
+var guessesInRow = rollDice() + 2;
+
 var main = function (input) {
-  var myOutputValue = 'hello world';
-  return myOutputValue;
+  // Generate a random dice number for roll
+  var randomDiceNumber = rollDice();
+  console.log("number generated for computer play: ", randomDiceNumber);
+  console.log("guesses in a row required: ", guessesInRow);
+  // Assign a play to each dice number
+  if (randomDiceNumber == 0) {
+    var computerTurn = "banana";
+    console.log("computer played 0 - banana");
+    console.log(randomDiceNumber == 0);
+  }
+
+  if (randomDiceNumber == 1) {
+    console.log("computer played 1 - chiesel");
+    console.log(randomDiceNumber == 1);
+    var computerTurn = "chiesel";
+  }
+
+  if (randomDiceNumber == 2) {
+    console.log("computer played 2 - faucet");
+    console.log(randomDiceNumber == 2);
+    var computerTurn = "faucet";
+  }
+
+  // Assign an output based on each input
+  // Input Validation
+  if (input != "chiesel" && input != "banana" && input != "faucet") {
+    myOutputValue =
+      "You played " +
+      input +
+      " which is invalid, please only play chiesel, banana or faucet.";
+    // Return output.
+    console.log("input validation: ", input);
+    return myOutputValue;
+  }
+
+  // If user guesses incorrect
+  if (input != computerTurn) {
+    myOutputValue =
+      "You played " +
+      input +
+      " and the computer played " +
+      computerTurn +
+      " so you lose and your win record is " +
+      winRecord +
+      " which means you need " +
+      (guessesInRow - winRecord) +
+      " more correct guess to win";
+    // Return output.
+    console.log("you played ", input, " and computer played ", computerTurn);
+    return myOutputValue;
+  }
+
+  // If user guesses correctly the required times
+  if (input == computerTurn && winRecord == guessesInRow - 1) {
+    winRecord = winRecord + 1;
+    myOutputValue =
+      "You played " +
+      input +
+      " and the computer played " +
+      computerTurn +
+      " so you win because your win record is " +
+      winRecord;
+    // Return output.
+    console.log("you played ", input, " and computer played ", computerTurn);
+    // Reset win record and number of guesses required
+    winRecord = 0;
+    guessesInRow = rollDice() + 2;
+    return myOutputValue;
+  }
+
+  // If user guesses correctly once
+  if (input == computerTurn && winRecord < guessesInRow) {
+    winRecord = winRecord + 1;
+    myOutputValue =
+      "You played " +
+      input +
+      " and the computer played " +
+      computerTurn +
+      " so you win and you need " +
+      (guessesInRow - winRecord) +
+      " more correct guess to win";
+    // Return output.
+    console.log("you played ", input, " and computer played ", computerTurn);
+    return myOutputValue;
+  }
 };