WatchChess 象棋

Chinese Chess (Xiangqi) for Wear OS — play on your wrist.

Features

• Full Chinese Chess board optimized for round watch displays
• AI opponent with 4 difficulty levels (alpha-beta search with opening book)
• Move & capture sound effects
• Haptic feedback on every interaction
• Game timer & move counter
• Undo (reverts both your move and AI's response)
• Background music (toggleable)
• Long press to open in-game menu

Controls

Action	Gesture
Select piece	Tap
Move piece	Tap legal position (green dot)
Open menu	Long press
Reset after game over	Tap anywhere

AI Engine

Pure Kotlin alpha-beta pruning with:

• Iterative deepening & aspiration windows
• Transposition tables (Zobrist hashing)
• Null move pruning & late move reductions
• Killer move & history heuristics
• MVV-LVA move ordering
• Quiescence search
• Opening book (~40 patterns)

Requirements

• Wear OS 3.0+ (API 30)
• Tested on Pixel Watch 4

Build

./gradlew assembleDebug
adb install app/build/outputs/apk/debug/app-debug.apk

See Also

• chinese_chess_mobile — 手机版中国象棋 (Android)
• XiangqiBot — 象棋 AI 对弈 Bot (Android)

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手表象棋

Wear OS 中国象棋 — 在手腕上下棋。

功能

• 适配圆形手表屏幕的完整象棋棋盘
• AI 对手，4 个难度等级（Alpha-Beta 搜索 + 开局库）
• 走子/吃子音效
• 触觉震动反馈
• 计时器 & 步数统计
• 悔棋（同时撤回你和 AI 的最后一步）
• 背景音乐（可开关）
• 长按呼出游戏内菜单

操作

操作	手势
选棋子	点击
走子	点击绿点位置
打开菜单	长按
结束后重开	点击任意位置

编译

./gradlew assembleDebug
adb install app/build/outputs/apk/debug/app-debug.apk