diff --git "a/week1/seeds-java/docs/\352\270\260\353\212\245\352\265\254\355\230\204\353\252\251\353\241\235.md" "b/week1/seeds-java/docs/\352\270\260\353\212\245\352\265\254\355\230\204\353\252\251\353\241\235.md"
new file mode 100644
index 0000000..e69de29
diff --git a/week1/seeds-java/src/main/java/code/seeds/Main.java b/week1/seeds-java/src/main/java/code/seeds/Main.java
index 07a13bd..95ccf46 100644
--- a/week1/seeds-java/src/main/java/code/seeds/Main.java
+++ b/week1/seeds-java/src/main/java/code/seeds/Main.java
@@ -1,5 +1,6 @@
 package code.seeds;
 
+import java.util.Random;
 import java.util.Scanner;
 
 public class Main {
@@ -7,6 +8,7 @@ public class Main {
     private String computerWord;
 
     public Main(){
+        Random ran = new Random();
         computerWord = RandomWordGenerator.getRandomWord();
     }
 
@@ -15,15 +17,67 @@ public Main(String fixedWord){  // 테스트용 생성자. 삭제 금지.
     }
 
     public static void main(String[] args) {
-        System.out.println("단어 맞추기 게임을 시작합니다!.");
+       // System.out.println("단어 맞추기 게임을 시작합니다!.");
         Scanner scanner = new Scanner(System.in);
         new Main().run(scanner);
         scanner.close();
     }
 
     public void run(Scanner scanner) {
-        System.out.print("단어를 입력해주세요: ");
-        String input = scanner.nextLine().trim();
+        System.out.println("단어 맞추기 게임을 시작합니다.");
+        while (true) {
+            System.out.print("단어를 입력해주세요: ");
+            String input = scanner.next();
+
+            if (input.length() != computerWord.length() || !input.matches("[a-zA-Z]+")) {
+                throw new IllegalArgumentException("5글자 알파벳으로 된 단어를 입력하세요.");
+            }
+
+            String answerTemp = computerWord;
+            int match = 0;
+            int wrong = 0;
+
+            for (int i = 0; i < answerTemp.length(); i++) {
+                if (input.substring(i, i + 1).equals(answerTemp.substring(i, i + 1))) {
+                    match++;
+                    answerTemp = answerTemp.substring(0, i) + "1" + answerTemp.substring(i + 1);
+                    input = input.substring(0, i) + "2" + input.substring(i + 1);
+                }
+            }
+
+            for (int i = 0; i < answerTemp.length(); i++) {
+                for (int j = 0; j < answerTemp.length(); j++) {
+                    if (input.substring(i, i + 1).equals(answerTemp.substring(j, j + 1))) {
+                        wrong++;
+                        answerTemp = answerTemp.substring(0, j) + "1" + answerTemp.substring(j + 1);
+                        break;
+                    }
+                }
+            }
+
+            if (match != 0) {
+                System.out.print(match + "매치 ");
+            }
+            if (wrong != 0) {
+                System.out.print(wrong + "틀림 ");
+            }
+            System.out.println();
+
+            if (match == 5) {
+                System.out.println("정답입니다! 게임 종료");
+                System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+                int num = scanner.nextInt();
+
+                if (num == 2) {
+                    break;
+                } else if (num == 1) {
+                    computerWord = RandomWordGenerator.getRandomWord();
+                }
+                else {
+                    throw new IllegalArgumentException("1 또는 2를 입력하세요.");
+                }
+            }
+        }
         // 컴퓨터 랜덤 단어 생성은 RandomWordGenerator.getRandomWord(); 를 이용한다.
     }
 }