diff --git a/index.html b/index.html
index af638da..2d9010d 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,7 @@ <h1>Guessing Game</h1>
         less?
       </p>
       <div>
-        <input type="number" id="guess" min="1" max="99" />
+        <input type="number" id="guess" min="1" max="99" step="1" required />
         <button id="submit">Submit Guess</button>
       </div>
       <div>
diff --git a/index.js b/index.js
index 4c2a94e..9783dd7 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,15 @@
 const guessInput = document.getElementById('guess');
 const submitButton = document.getElementById('submit');
+
+//event listener to validate input data
+guessInput.addEventListener("input", () => {
+  const value = guessInput.valueAsNumber;
+
+  submitButton.disabled =
+    isNaN(value) || value < 1 || value > 99;
+});
+
+
 const resetButton = document.getElementById('reset');
 const messages = document.getElementsByClassName('message');
 const tooHighMessage = document.getElementById('too-high');
@@ -25,6 +35,7 @@ function getRandomNumber(min, max) {
 function checkGuess() {
   // Get value from guess input element
   const guess = parseInt(guessInput.value, 10);
+
   attempts = attempts + 1;
 
   hideAllMessages();
@@ -37,22 +48,28 @@ function checkGuess() {
 
     submitButton.disabled = true;
     guessInput.disabled = true;
-  }
-
-  if (guess !== targetNumber) {
+  } else {
+    //was 2 if instead if/else
     if (guess < targetNumber) {
       tooLowMessage.style.display = '';
     } else {
-      tooLowMessage.style.display = '';
+      //wrong message was displayed - tooLowMessage
+      tooHighMessage.style.display = '';
     }
 
     const remainingAttempts = maxNumberOfAttempts - attempts;
+  
+  //additing of output with quontity of remain guesses
+  numberOfGuessesMessage.style.display = '';
 
-    numberOfGuessesMessage.style.display = '';
+  if (remainingAttempts === 1) {
+    numberOfGuessesMessage.innerHTML = `You guessed ${guess}. <br> 1 guess left`;
+  } else {
     numberOfGuessesMessage.innerHTML = `You guessed ${guess}. <br> ${remainingAttempts} guesses remaining`;
   }
-
-  if (attempts ==== maxNumberOfAttempts) {
+}
+// was additional '=' in row below
+  if (attempts === maxNumberOfAttempts) {
     submitButton.disabled = true;
     guessInput.disabled = true;
   }
@@ -61,23 +78,25 @@ function checkGuess() {
 
   resetButton.style.display = '';
 }
-
+//<= massages.length can give result undefined
 function hideAllMessages() {
-  for (let elementIndex = 0; elementIndex <= messages.length; elementIndex++) {
+  for (let elementIndex = 0; elementIndex < messages.length; elementIndex++) {
     messages[elementIndex].style.display = 'none';
   }
 }
-
-funtion setup() {
+//misspelling in "function"
+function setup() {
   // Get random number
   targetNumber = getRandomNumber(1, 100);
   console.log(`target number: ${targetNumber}`);
 
   // Reset number of attempts
-  maxNumberOfAttempts = 0;
+  // Does not valid out of this function on global level: const maxNumberOfAttempts = 0; we need attempts
+  attempts = 0;
 
   // Enable the input and submit button
-  submitButton.disabeld = false;
+  // we need to turn off submitButton before input check
+  submitButton.disabled = true;
   guessInput.disabled = false;
 
   hideAllMessages();