diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,37 @@
+# Chess Game Application
+
+This project is a Java-based chess game application that provides a graphical user interface (GUI) for playing chess. The application allows users to select their color (black or white) and start a game of chess against an opponent.
+
+## Project Structure
+
+- `App.java`: The entry point of the application, which initializes the GUI for selecting the player's color and starting the game.
+- `Chess.java`: Manages the chess game, including the initialization of the chessboard, placement of pieces, and the logic for moving pieces.
+- `GameState.java`: Manages the state of the chess game, including the positions of pieces on the board.
+- `Validator.java`: Validates the moves of chess pieces based on the rules of chess.
+
+## Documentation
+
+For detailed documentation on each class, refer to the following files:
+
+- [App.md](docs/App.md): Documentation for `App.java`
+- [Chess.md](docs/Chess.md): Documentation for `Chess.java`
+- [GameState.md](docs/GameState.md): Documentation for `GameState.java`
+- [Validator.md](docs/Validator.md): Documentation for `Validator.java`
+
+## Getting Started
+
+To run the application, execute the `main` method in `App.java`. This will launch the GUI, allowing you to select your color and start the game.
+
+## Requirements
+
+- Java Development Kit (JDK)
+- Maven (for managing dependencies)
+
+## How to Play
+
+1. Run the application.
+2. Select your color (black or white) in the GUI.
+3. Click "Start" to begin the game.
+4. Play chess by clicking on the pieces and then clicking on the space you want them to move (according to the rules of chess).
+
+Enjoy playing chess!
diff --git a/docs/App.md b/docs/App.md
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+++ b/docs/App.md
@@ -0,0 +1,22 @@
+### Documentation for `App.java`
+
+#### Class: `App`
+
+The `App` class serves as the entry point for the chess game application, providing a graphical user interface (GUI) for selecting the player's color and starting the game.
+
+#### Fields:
+- `public static boolean whiteTurn`: A static boolean indicating whether it is white's turn.
+
+#### Methods:
+
+- `public static void main(String[] args)`:
+    - The main method initializes the GUI for the chess game menu, allowing the user to select their color and start the game.
+    - Parameters:
+        - `args`: An array of command-line arguments for the application.
+
+#### Usage Example:
+```java
+public static void main(String[] args) {
+    App.main(new String[]{});
+}
+```
diff --git a/docs/Chess.md b/docs/Chess.md
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+++ b/docs/Chess.md
@@ -0,0 +1,50 @@
+### Documentation for `Chess.java`
+
+#### Class: `Chess`
+
+The `Chess` class represents a chess game with a graphical user interface (GUI) using Java Swing. It handles the initialization of the chessboard, the placement of pieces, and the logic for moving pieces.
+
+#### Fields:
+- `JButton[][] boardSquares`: A 2D array representing the chessboard squares.
+- `GameState state`: An instance of the `GameState` class to manage the state of the game.
+- `Validator val`: An instance of the `Validator` class to validate moves.
+- `JFrame jFrame`: The main frame for the chess game.
+- `static int x1, y1`: Coordinates for the first selected square.
+
+#### Constructor:
+- `public Chess()`: Initializes a new instance of the `Chess` class.
+
+#### Methods:
+
+- `public void start(boolean isWhite) throws IOException`:
+    - Initializes the chessboard and places the pieces.
+    - Sets up the GUI components and displays the main frame.
+    - Parameters:
+        - `isWhite`: A boolean indicating whether the player is playing as white.
+
+- `private void initializeBoard(boolean isWhite)`:
+    - Sets up the initial positions of the pieces on the board.
+    - Parameters:
+        - `isWhite`: A boolean indicating whether the player is playing as white.
+
+- `private void setupPieces(int pawn, int pawnOpp, int rook, int knight, int bishop, int queen, int king, int rookOpp, int knightOpp, int bishopOpp, int queenOpp, int kingOpp)`:
+    - Places the pieces on the board based on the provided piece codes.
+    - Parameters:
+        - `pawn`, `pawnOpp`, `rook`, `knight`, `bishop`, `queen`, `king`, `rookOpp`, `knightOpp`, `bishopOpp`, `queenOpp`, `kingOpp`: Integer codes representing different pieces.
+
+- `public void check(int x, int y)`:
+    - Handles the logic for selecting and moving pieces on the board.
+    - Parameters:
+        - `x`, `y`: Coordinates of the selected square.
+
+#### Usage Example:
+```java
+public static void main(String[] args) {
+    Chess game = new Chess();
+    try {
+        game.start(true); // Start the game with the player as white
+    } catch (IOException e) {
+        e.printStackTrace();
+    }
+}
+```
diff --git a/docs/GameState.md b/docs/GameState.md
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+++ b/docs/GameState.md
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+### Documentation for `GameState.java`
+
+#### Class: `GameState`
+
+The `GameState` class manages the state of the chess game, including the positions of pieces on the board.
+
+#### Fields:
+- `public static HashMap<Integer, Integer> coordinatePlane`: A static `HashMap` representing the board, where the key is a coordinate (x * 10 + y) and the value is the piece code.
+
+#### Constructor:
+- `public GameState()`: Initializes a new instance of the `GameState` class.
+
+#### Methods:
+
+- `public void putInMap(int xy, int piece)`:
+    - Adds a piece to the board at the specified coordinate.
+    - Parameters:
+        - `xy`: An integer representing the coordinate (x * 10 + y).
+        - `piece`: An integer code representing the piece.
+
+- `public void updateMap(Integer xy, Integer piece)`:
+    - Updates the piece at the specified coordinate.
+    - Parameters:
+        - `xy`: An integer representing the coordinate (x * 10 + y).
+        - `piece`: An integer code representing the piece.
+
+- `public int checkPiece(int x, int y)`:
+    - Retrieves the piece code at the specified coordinates.
+    - Parameters:
+        - `x`: The x-coordinate on the board.
+        - `y`: The y-coordinate on the board.
+    - Returns:
+        - An integer code representing the piece at the specified coordinates.
+
+#### Usage Example:
+```java
+public static void main(String[] args) {
+    GameState state = new GameState();
+    state.putInMap(11, 1); // Place a white pawn at coordinate (1, 1)
+    int piece = state.checkPiece(1, 1); // Check the piece at coordinate (1, 1)
+    System.out.println("Piece at (1, 1): " + piece);
+}
+```
diff --git a/docs/Validator.md b/docs/Validator.md
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+++ b/docs/Validator.md
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+### Documentation for `Validator.java`
+
+#### Class: `Validator`
+
+The `Validator` class is responsible for validating the moves of chess pieces based on the rules of chess.
+
+#### Constructor:
+- `public Validator()`: Initializes a new instance of the `Validator` class.
+
+#### Methods:
+
+- `public boolean validation(int type, int color, int x1, int x2, int y1, int y2)`:
+    - Validates whether a move is legal based on the type and color of the piece and the coordinates of the move.
+    - Parameters:
+        - `type`: An integer representing the type of the piece (1 = Pawn, 2 = Rook, 3 = Knight, 4 = Bishop, 5 = Queen, 6 = King).
+        - `color`: An integer representing the color of the piece (0 = White, 1 = Black).
+        - `x1`: The x-coordinate of the starting position.
+        - `x2`: The x-coordinate of the ending position.
+        - `y1`: The y-coordinate of the starting position.
+        - `y2`: The y-coordinate of the ending position.
+    - Returns:
+        - A boolean indicating whether the move is valid.
+
+#### Usage Example:
+```java
+public static void main(String[] args) {
+    Validator validator = new Validator();
+    boolean isValid = validator.validation(1, 0, 2, 2, 7, 5); // Validate a move for a white pawn
+    System.out.println("Is the move valid? " + isValid);
+}
+```
diff --git a/src/main/java/com/redplover/app/App.java b/src/main/java/com/redplover/app/App.java
index 5cae093..da2b15d 100644
--- a/src/main/java/com/redplover/app/App.java
+++ b/src/main/java/com/redplover/app/App.java
@@ -2,8 +2,6 @@
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.io.IOException;
 
 class App {
@@ -89,9 +87,4 @@ public static void main(String[] args) {
             jFrame.dispose();
         });
     }
-
-    public static void close(int x) {
-        System.out.println(x);
-        System.exit(0);
-    }
 }