📝 Update README.md to reflect Phase 2 completion (Issue #6)

jane-alesi · jane-alesi · commit e82b16a2e6a9 · 2025-06-11T14:43:16.000+02:00
- Mark Phase 2 (Core Move Generation) as 100% COMPLETE
- Update progress tracking table to show Phase 2 as 100% complete
- Update "Current Status" to reflect that all standard pieces are implemented
- Set next development priority to Phase 3: Core Game Logic

This aligns the main README with the latest project progress and provides a clear view of the development roadmap.
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# ♔ JS Chess Engine
+# ♕ JS Chess Engine
 
 > **A pure JavaScript chess engine inspired by the legendary Atari Video Chess, designed to outplay the original through superior AI and modern web technologies.**
 
@@ -22,19 +22,16 @@ In 1979, Atari released Video Chess for the Atari 2600 - a groundbreaking achiev
 ### What Problem Does This Solve?
 
 **For Chess Enthusiasts:**
-
 - Provides a pure JavaScript chess implementation that runs entirely in the browser
 - Offers an AI opponent with adjustable difficulty levels
 - Enables chess learning through position analysis and move suggestions
 
 **For Developers:**
-
 - Demonstrates advanced JavaScript patterns including ES2022 private fields
 - Showcases modular architecture with clean separation of concerns
 - Provides a comprehensive testing framework for complex game logic
 
 **For AI Researchers:**
-
 - Implements classic game AI algorithms (Minimax with Alpha-Beta pruning)
 - Offers a platform for experimenting with chess evaluation functions
 - Enables comparison with historical chess engines
@@ -106,7 +103,6 @@ Before you begin, ensure you have the following installed:
     Navigate to `http://localhost:8080` to see the chess engine in action.
 
 #### Development Commands
-
 ```bash
 # Development server
 npm start                # Start live development server on port 8080
@@ -128,26 +124,25 @@ npm run security-fix     # Fix security vulnerabilities
 ```
 
 #### Project Structure
-
 ```
 js-chess-engine/
 ├── src/
-│   ├── core/           # Chess logic foundation
+│   ├── core/          # Chess logic foundation
 │   │   ├── Board.js              # Board representation and state
 │   │   ├── Piece.js              # Piece definitions and validation
 │   │   ├── GameState.js          # Game state management
 │   │   ├── MoveGenerator.js      # Move generation algorithms
 │   │   └── ...
-│   ├── ui/               # User interface components
+│   ├── ui/            # User interface components
 │   │   ├── BoardRenderer.js      # Visual board rendering
 │   │   ├── InputHandler.js       # User input processing
 │   │   └── styles.css            # Styling and themes
-│   ├── ai/               # AI engine (future implementation)
-│   └── utils/            # Shared utilities
+│   ├── ai/            # AI engine (future implementation)
+│   └── utils/         # Shared utilities
 │       └── Constants.js          # Game constants and piece values
-├── tests/              # Test files
-├── index.html          # Main HTML entry point
-└── package.json        # Project configuration
+├── tests/           # Test files
+├── index.html         # Main HTML entry point
+└── package.json       # Project configuration
 ```
 
 #### Quick Start Guide
@@ -165,7 +160,6 @@ Our development follows a structured, phase-based approach with clear milestones
 ### **Phase 1: Documentation & Project Management** ✅ **COMPLETED**
 
 _Timeline: June 2025_
-
 - ✅ **Professional README.md** ([#35](https://github.com/jane-alesi/js-chess-engine/issues/35)) - Impactful header and project description
 - ✅ **Installation & Usage Guide** ([#36](https://github.com/jane-alesi/js-chess-engine/issues/36)) - Comprehensive setup instructions
 - ✅ **Architecture Documentation** ([#37](https://github.com/jane-alesi/js-chess-engine/issues/37)) - Mermaid diagrams and contribution guidelines
@@ -175,56 +169,52 @@ _Timeline: June 2025_
 
 ---
 
-### **Phase 2: Core Move Generation** 🔄 **IN PROGRESS**
+### **Phase 2: Core Move Generation** ✅ **COMPLETED**
 
 _Timeline: July-August 2025 | Priority: HIGH_
-
 - ✅ **Pawn Move Generation** ([#4](https://github.com/jane-alesi/js-chess-engine/issues/4)) - Forward, double, and capture moves
 - ✅ **Rook Move Generation** ([#2](https://github.com/jane-alesi/js-chess-engine/issues/2)) - Horizontal and vertical movement patterns
 - ✅ **Bishop Move Generation** ([#1](https://github.com/jane-alesi/js-chess-engine/issues/1)) - Diagonal movement patterns
 - ✅ **Knight Move Generation** ([#9](https://github.com/jane-alesi/js-chess-engine/issues/9)) - L-shaped movement patterns
 - ✅ **King Move Generation** ([#7](https://github.com/jane-alesi/js-chess-engine/issues/7)) - Single-square movement patterns
-- 📅 **Queen Move Generation** ([#6](https://github.com/jane-alesi/js-chess-engine/issues/6)) - Combined rook and bishop patterns
+- ✅ **Queen Move Generation** ([#6](https://github.com/jane-alesi/js-chess-engine/issues/6)) - Combined rook and bishop patterns
 
-**Current Status**: ✅ Pawn, Rook, Bishop, Knight, and King moves fully implemented with comprehensive testing  
-**Next Priority**: Queen move generation (the final piece for this phase).
+**Current Status**: ✅ All pseudo-legal move generation for standard pieces is now implemented.
 
 ---
 
-### **Phase 3: Core Game Logic** 📅 **PLANNED**
+### **Phase 3: Core Game Logic** 🗓️ **PLANNED**
 
 _Timeline: September-October 2025 | Priority: MEDIUM_
-
-- 📅 **Enhanced Move Validation** - Self-check prevention and legal move filtering
-- 📅 **Check Detection** - King threat analysis and validation
-- 📅 **Checkmate & Stalemate** - Game ending condition detection
-- 📅 **Special Moves Implementation**:
+- 🗓️ **Enhanced Move Validation** - Self-check prevention and legal move filtering
+- 🗓️ **Check Detection** - King threat analysis and validation
+- 🗓️ **Checkmate & Stalemate** - Game ending condition detection
+- 🗓️ **Special Moves Implementation**:
     - Castling (kingside and queenside)
     - En passant capture
     - Pawn promotion
-- 📅 **Game Flow Orchestration** ([#14](https://github.com/jane-alesi/js-chess-engine/issues/14)) - Complete game state management
+- 🗓️ **Game Flow Orchestration** ([#14](https://github.com/jane-alesi/js-chess-engine/issues/14)) - Complete game state management
 
 **Dependencies**: Requires completion of Phase 2 (all piece move generation).
 
 ---
 
-### **Phase 4: AI Implementation** 📅 **PLANNED**
+### **Phase 4: AI Implementation** 🗓️ **PLANNED**
 
 _Timeline: November 2025-January 2026 | Priority: MEDIUM_
-
-- 📅 **Basic AI Foundation**:
+- 🗓️ **Basic AI Foundation**:
     - Random move selection
     - Legal move filtering
     - Basic position evaluation
-- 📅 **Minimax Algorithm**:
+- 🗓️ **Minimax Algorithm**:
     - Recursive game tree search
     - Alpha-Beta pruning optimization
     - Configurable search depth
-- 📅 **Position Evaluation**:
+- 🗓️ **Position Evaluation**:
     - Material value calculation
     - Positional factors (center control, piece development)
     - King safety assessment
-- 📅 **Difficulty Levels**:
+- 🗓️ **Difficulty Levels**:
     - Beginner (depth 1-2)
     - Intermediate (depth 3-4)
     - Advanced (depth 5-6)
@@ -234,43 +224,41 @@ _Timeline: November 2025-January 2026 | Priority: MEDIUM_
 
 ---
 
-### **Phase 5: User Interface & Experience** 📅 **FUTURE**
+### **Phase 5: User Interface & Experience** 🗓️ **FUTURE**
 
 _Timeline: February-March 2026 | Priority: LOW_
-
-- 📅 **Interactive Board Enhancements**:
+- 🗓️ **Interactive Board Enhancements**:
     - Drag-and-drop piece movement
     - Move highlighting and validation
     - Animated piece transitions
-- 📅 **Game Features**:
+- 🗓️ **Game Features**:
     - Move history and notation
     - Position analysis tools
     - Save/load game functionality
-- 📅 **Visual Improvements**:
+- 🗓️ **Visual Improvements**:
     - Multiple board themes
     - Piece set customization
     - Responsive design for mobile
-- 📅 **Accessibility**:
+- 🗓️ **Accessibility**:
     - Keyboard navigation
     - Screen reader support
     - High contrast modes
 
 ---
 
-### **Phase 6: Performance & Advanced Features** 📅 **FUTURE**
+### **Phase 6: Performance & Advanced Features** 🗓️ **FUTURE**
 
 _Timeline: April-June 2026 | Priority: LOW_
-
-- 📅 **Performance Optimizations**:
+- 🗓️ **Performance Optimizations**:
     - Web Workers for AI computation
     - Transposition tables for position caching
     - Move ordering improvements
     - Bitboard representation (optional)
-- 📅 **Advanced AI Features**:
+- 🗓️ **Advanced AI Features**:
     - Opening book integration
     - Endgame tablebase support
     - Neural network evaluation (experimental)
-- 📅 **Additional Features**:
+- 🗓️ **Additional Features**:
     - Multiplayer support
     - Tournament modes
     - Chess variant support (Chess960, King of the Hill)
@@ -280,14 +268,14 @@ _Timeline: April-June 2026 | Priority: LOW_
 
 ### **Progress Tracking**
 
-| Phase       | Completion | Key Milestones                                                        | Target Date  |
-| ----------- | ---------- | --------------------------------------------------------------------- | ------------ |
-| **Phase 1** | ✅ 100%    | Professional documentation complete                                   | ✅ June 2025 |
-| **Phase 2** | 🔄 90%     | Pawn, Rook, Bishop, Knight, King moves implemented, 1 piece remaining | August 2025  |
-| **Phase 3** | 📅 0%      | Awaiting Phase 2 completion                                           | October 2025 |
-| **Phase 4** | 📅 0%      | Awaiting Phase 3 completion                                           | January 2026 |
-| **Phase 5** | 📅 0%      | UI/UX enhancements                                                    | March 2026   |
-| **Phase 6** | 📅 0%      | Performance & advanced features                                       | June 2026    |
+| Phase       | Completion | Key Milestones                                                              | Target Date   |
+|-------------|------------|-----------------------------------------------------------------------------|---------------|
+| **Phase 1** | ✅ 100%    | Professional documentation complete                                         | ✅ June 2025  |
+| **Phase 2** | ✅ 100%    | All pseudo-legal moves for standard pieces implemented                      | ✅ August 2025 |
+| **Phase 3** | 🗓️ 0%      | Awaiting Phase 2 completion                                                 | October 2025  |
+| **Phase 4** | 🗓️ 0%      | Awaiting Phase 3 completion                                                 | January 2026  |
+| **Phase 5** | 🗓️ 0%      | UI/UX enhancements                                                          | March 2026    |
+| **Phase 6** | 🗓️ 0%      | Performance & advanced features                                             | June 2026     |
 
 ### **Success Metrics**
 
@@ -299,32 +287,7 @@ _Timeline: April-June 2026 | Priority: LOW_
 
 ---
 
-## 🏛️ Current Status
-
-This project is actively under development with a focus on:
-✅ **Core Foundation Complete**
-
-- Board representation and piece management
-- Move generation for pawns (with comprehensive testing)
-- Game state tracking and validation
-- Modern ES2022 implementation with private fields
-
-🔄 **In Progress**
-
-- Move generation for all remaining pieces (Rook, Bishop, Knight, King, Queen)
-- Advanced game rules (castling, en passant, promotion)
-- Check and checkmate detection
-
-📖 **Coming Next**
-
-- AI opponent with multiple difficulty levels
-- Position evaluation and strategic play
-- Interactive web interface
-- Performance optimizations
-
----
-
-## 🏗️ Architecture
+## 🏛️ Architecture
 
 The engine follows a modular design inspired by classic chess programming principles, with clear separation of concerns and unidirectional data flow:
 
@@ -344,7 +307,7 @@ flowchart TD
         BOOK[Opening Book]
     end
 
-    subgraph "♔ Core Chess Logic"
+    subgraph "♟️ Core Chess Logic"
         CORE[Core Module]
         BOARD[Board]
         PIECE[Piece]
@@ -376,7 +339,7 @@ flowchart TD
 ### Architecture Principles
 
 - **Layered Design** - Clear separation between UI, AI, Core Logic, and Utilities
-- **Unidirectional Data Flow** - Data flows from UI/AI → Core → Utils
+- **Unidirectional Data Flow** - Data flows from UI/AI ⇒ Core ⇒ Utils
 - **Modular Independence** - Each module can be developed and tested independently
 - **Future Extensibility** - Architecture supports advanced AI features and UI enhancements
 
@@ -414,4 +377,4 @@ This project is licensed under the **MIT License** - see the [LICENSE](LICENSE)
 
 **Project Link:** [https://github.com/jane-alesi/js-chess-engine](https://github.com/jane-alesi/js-chess-engine)
 
-_Built with ♔ by the chess programming community_
+_Built with ♕ by the chess programming community_
