diff --git a/1/practice/src/main/scala/org/spbsu/mkn/scala/TheGame.scala b/1/practice/src/main/scala/org/spbsu/mkn/scala/TheGame.scala
index d773c36..01e587a 100644
--- a/1/practice/src/main/scala/org/spbsu/mkn/scala/TheGame.scala
+++ b/1/practice/src/main/scala/org/spbsu/mkn/scala/TheGame.scala
@@ -1,24 +1,67 @@
 package org.spbsu.mkn.scala
 
+import scala.::
+import scala.collection.IterableOnce.iterableOnceExtensionMethods
 import scala.io.StdIn.readLine
-import scala.util.Random
+import scala.util.Random._
 
 object TheGame {
 
   sealed trait GuessResult
+
   case class Correct(numTries: Int) extends GuessResult
+
   case class Incorrect(bulls: Int, cows: Int) extends GuessResult
 
   class RepeatingDigitsException extends RuntimeException
+
   class WrongNumberLengthException(expected: Int, got: Int) extends RuntimeException
 
-  def generateNumberString(length: Int): String = ???
+  //  def generateNumberString(length: Int): String = alphanumeric.drop(length).toString()  // если эксклюзивность не важна
+  def generateNumberString(length: Int): String = { // a-z A-Z 0-9
+    if (length < 1) return ""
+    val some_string = generateNumberString(length - 1)
+    val c = alphanumeric.find(char => !some_string.contains(char)).get
+    some_string + c
+  }
+
+  def validate(secret: String, userInput: String, numTries: Int = 1): GuessResult = {
+    if (secret.toSet.size != secret.size) throw new RepeatingDigitsException
+    if (userInput.toSet.size != userInput.size) throw new RepeatingDigitsException
+    if (userInput.size != secret.size) throw new WrongNumberLengthException(secret.size, userInput.size)
 
-  def validate(secret: String, userInput: String, numTries: Int = 1): GuessResult = ???
+    val bulls = userInput.zip(secret).count(pair => pair._1 == pair._2)
+    val cows = userInput.toSet.intersect(secret.toSet).size - bulls
+    if (bulls == secret.size) return Correct(numTries)
+    Incorrect(bulls, cows)
+  }
 
   def main(args: Array[String]): Unit = {
-    print("Enter your name: ")
-    val name = readLine()
-    println(s"Hello, $name!")
+    println("введите длинну строки (<64)")
+    var length = readLine().toInt
+    println("будут использованны такие символы: a-z A-Z 0-9")
+    var secret = generateNumberString(length)
+    var guessResult: GuessResult = Incorrect(0, 0)
+    var numTries = 0
+    while (guessResult.isInstanceOf[TheGame.Incorrect]) {
+      numTries += 1
+      println(s"введите строку с уникалюными символами длинны $length")
+      var userInput = readLine()
+      try {
+        guessResult = validate(secret, userInput, numTries)
+        guessResult match {
+          case Incorrect(bulls, cows) => {
+            println(s"$bulls быков, $cows коров")
+          }
+          case Correct(numTries) =>
+            println(s"верно за $numTries попыток")
+          }
+        }
+      catch {
+        case e: RepeatingDigitsException => println("встречен не уникальный символ")
+        case e: WrongNumberLengthException => println("длинна вашей строки отличается")
+        case e => throw e
+      }
+    }
   }
 }
diff --git a/1/practice/src/test/scala/org/spbsu/mkn/scala/TheGameTest.scala b/1/practice/src/test/scala/org/spbsu/mkn/scala/TheGameTest.scala
index a6f3d0f..065d11b 100644
--- a/1/practice/src/test/scala/org/spbsu/mkn/scala/TheGameTest.scala
+++ b/1/practice/src/test/scala/org/spbsu/mkn/scala/TheGameTest.scala
@@ -29,7 +29,7 @@ class TheGameTest extends AnyFunSuite {
 
   test("incorrect guess is reported") {
     assert(validate("0", "1").isInstanceOf[TheGame.Incorrect])
-    assert(validate("12345", "00000").isInstanceOf[TheGame.Incorrect])
+    assert(validate("12345", "ABCDE").isInstanceOf[TheGame.Incorrect])
   }
 
   test("correct guess validates") {