...

src/Field.java

-package PACKAGE_NAME;
-
 public class Field {
+    private boolean isFree;
+    private int num;
+    private char letter;
 }

src/Main.java

 public class Main {
+
 }

src/Man.java

-package PACKAGE_NAME;
 
 public class Man {
+    private char color;
+    private int num;
+    private char letter;
+    private String type;
+    boolean hasMoved;
+
+    public Man(char color, int num, char letter, String type) {
+        this.color = color;
+        this.num = num;
+        this.letter = letter;
+        this.type = type;
+        this.hasMoved = false;
+    }
+
+    public boolean move(int num, char letter) {
+        if (this.type.equals("king") && Math.abs(num - this.num) <= 1 && Math.abs((int) letter - (int) this.letter) <= 1) {
+            this.num = num;
+            this.letter = letter;
+            hasMoved = true;
+            return true;
+        }
+        else if (this.type.equals("queen") && ((num == this.num || letter == this.letter) || (Math.abs(num - this.num) == Math.abs((int) letter - (int) this.letter)))) {
+            this.num = num;
+            this.letter = letter;
+            hasMoved = true;
+            return true;
+        }
+        else if (this.type.equals("rook") && (num == this.num || letter == this.letter)) {
+            this.num = num;
+            this.letter = letter;
+            hasMoved = true;
+            return true;
+        }
+        else if (this.type.equals("bishop") && Math.abs(num - this.num) == Math.abs((int) letter - (int) this.letter)) {
+            this.num = num;
+            this.letter = letter;
+            hasMoved = true;
+            return true;
+        }
+        else if (this.type.equals("knight") && (Math.abs(num - this.num) == 1 && Math.abs((int) letter - (int) this.letter) == 2) || (Math.abs(num - this.num) == 2 && Math.abs((int) letter - (int) this.letter) == 1)) {
+            this.num = num;
+            this.letter = letter;
+            hasMoved = true;
+            return true;
+        }
+        else if (this.type.equals("soldier")) {
+            if (this.color == 'w') {
+                if (!this.hasMoved && num - this.num == 2) {
+                    this.num = num;
+                    this.letter = letter;
+                    hasMoved = true;
+                    return true;
+                }
+                if (this.hasMoved && num - this.num == 1) {
+                    this.num = num;
+                    this.letter = letter;
+                    hasMoved = true;
+                    return true;
+                }
+            }
+            else if (this.color == 'b') {
+                if (!this.hasMoved && num - this.num == -2) {
+                    this.num = num;
+                    this.letter = letter;
+                    hasMoved = true;
+                    return true;
+                }
+                if (this.hasMoved && num - this.num == -1) {
+                    this.num = num;
+                    this.letter = letter;
+                    hasMoved = true;
+                    return true;
+                }
+            }
+        }
+        System.out.println("Wrong Input!");
+        return false;
+    }
 }
\ No newline at end of file