MOD Chess

# MOD Chess: Zone Lock (v7.1 Beta)

👑 **Welcome to MOD Chess: Zone Lock (v7.1 Beta)!**

While the pieces move exactly like standard chess, a real-time board-altering "Zone Lock" system fuses into a brand-new strategic challenge.

---

## 🔒 Core Rules

* **Zone Lock:** Every capture flips tiles in sequence (marked with a red border and '✕').

  * *(Pawn: 1, Knight/Bishop: 2, Rook: 3, Queen: 5)*

* **Forbidden Zones:** **Only Kings** are forbidden from entering flipped tiles. Other pieces can stand/pass freely.

* **Cycle Restore (Reverse-Beneficiary System):** When a flip cycle completes, your own locked tiles are not restored. Instead, the oldest locked tile on the *opponent's* side is restored to its original color. Over-capturing comes with a strategic cost!

  * *Does not trigger if the opponent has 3 or fewer locked tiles due to the protection floor.*

---

## 🤖 Features

* **Smart AI Opponent:** Play against a strong local AI opponent (Black) powered by Negamax, Iterative Deepening, Quiescence Search, and Transposition Tables.

* **Handicap & LEVEL System:** Set custom handicaps (0-16 initial flipped tiles). Win 3 consecutive matches against the AI with handicap to permanently record your highest "LEVEL" badge.

* **Custom Zone Lock:** Customize the number of tiles flipped for each piece type to create your own balance.

* **Responsive Design:** Fully optimized layouts for both desktop and mobile screens with responsive tap control.

---

## ⌨️ Controls

* **Select / Move:** Left-click or Tap a piece, then select a highlighted green tile.

* **Undo:** Press the "Undo" button to take back a move (disabled while the AI is thinking).