3. Training Mode: The Chess Lv.100 (plus Online) includes a training mode where players can practice and enhance their strategies. This mode provides helpful tips, suggestions, and analysis of moves to help players understand their strengths and weaknesses.

4. Offline Mode: In addition to online play, the game allows you to play offline against a computer opponent. This is perfect for players who want to practice without an internet connection or prefer playing against AI.

II. Getting Started - Rules and Basics:
Before diving into the game, it is crucial to understand the basic rules of chess. The rules can seem intimidating at first, but once you grasp them, the game becomes more enjoyable. Here are the fundamental rules:

1. Chessboard: The game is played on an 8x8 checkered board with alternating light and dark squares.

2. Pieces and their Movement: Chess features six different types of pieces: king, queen, rook, knight, bishop, and pawn. Each piece has unique movement abilities, e.g., bishops move diagonally, rooks move horizontally and vertically, etc. Pawns have more limited movement, but they can promote to more powerful pieces if they reach the other end of the board.

3. Objective: The goal of the game is to checkmate the opponent's king, which means placing the king in a position where it is under attack and cannot escape.

III. Strategies and Tips:
To improve your chess skills, here are some strategies and tips that will give you an edge in the game:

1. Develop Your Pieces: At the start of the game, focus on developing your pieces and controlling the center of the board. This gives you more options and flexibility for your moves.

2. Castle: Castling is an essential move that helps protect your king and connect your rooks. It involves moving your king two squares towards a rook and placing the rook on the other side of the king.

3. Plan Ahead: Look ahead and anticipate your opponent's moves. Try to predict their strategy and adjust your plan accordingly. Be flexible and ready to adapt.

4. Control the Center: The center of the board is a vital area to control. Dominating the center allows you to launch more powerful attacks and restricts your opponent's movements.

5. Piece Values: Understanding the relative value of pieces will guide you in making strategic decisions. For example, sacrificing a minor piece (bishop/knight) for a more valuable piece (queen/rook) may be advantageous.

IV. Advanced Techniques:
As you progress through the game, consider implementing advanced techniques to outsmart your opponent:

1. Forks and Pins: Master the art of forks and pins, which involve placing your opponent's pieces in compromising positions. A fork occurs when one piece attacks two or more pieces simultaneously, while a pin restricts the movement of an opponent's piece, often forcing them to defend another valuable piece.

2. Checkmate Patterns: Familiarize yourself with common checkmate patterns, such as the Back-Rank Mate, the Fool's Mate, or the Scholar's Mate. Recognizing these patterns can help you create opportunities for a decisive checkmate.

3. Endgame Study: Spend time studying endgame scenarios, as they often determine the outcome of a game. Understanding endgame principles and techniques, such as opposition and pawn promotion, will significantly improve your chances of success.

Conclusion:
The Chess Lv.100 (plus Online) provides both beginners and experienced players with a comprehensive platform to learn and enhance their chess skills. By following this walkthrough, understanding the rules, implementing strategies, and practicing advanced techniques, you'll be on your way to becoming a chess grandmaster. So dive into the game, challenge yourself at different difficulty levels, and take advantage of the online play to compete against global opponents. Enjoy this immersive chess experience and outmaneuver your rivals on the virtual 8x8 battlefield!