🧩 数独游戏
6 个难度等级 · 后端预生成题目 · 确保唯一解 · 计时挑战
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🎉 恭喜完成！得分：0
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[{"name":"入门","min":50,"max":55},{"name":"简单","min":42,"max":49},{"name":"中等","min":35,"max":41},{"name":"困难","min":30,"max":34},{"name":"专家","min":25,"max":29},{"name":"极限","min":20,"max":24}]
游戏规则
数独是一种经典的数字逻辑游戏。游戏盘面是一个 9×9 的网格，被分为 9 个 3×3 的宫。目标是在空格中填入数字 1-9，使得每行、每列和每个 3×3 宫内的数字都恰好出现一次，不重复。
点击格子选中，然后点击右侧数字按钮或按键盘数字键填入数字。点击"擦除"可清除当前格子的数字，使用"提示"获取帮助，用"检查"验证当前填写是否正确。
难度说明
难度预填数字适合人群
入门50-55第一次玩数独的新手
简单42-49有一定基础
中等35-41熟悉基本技巧
困难30-34需要高级技巧
专家25-29挑战逻辑极限
极限20-24真正的数独大师
常见问题（FAQ）
数独游戏的规则是什么？
数独盘面是一个 9×9 的网格，被分为 9 个 3×3 的宫。玩家需要在空格中填入数字 1-9，使得每行、每列和每个 3×3 宫内的数字都恰好出现一次，不重复。游戏开始时会有一些预填数字作为提示，玩家需要根据逻辑推理填满所有空格。
6 个难度等级有什么区别？
难度越高，盘面上预填的数字越少，需要推理的步骤越多。入门（50-55 个预填数字）适合新手，简单（42-49）适合有一定基础的玩家，中等（35-41）需要熟悉基本技巧，困难（30-34）需要高级技巧，专家（25-29）和极限（20-24）则适合真正的数独大师。
题目是随机生成的吗？能否保证有唯一解？
本游戏的数独题目在 Astro 构建时由后端 Node.js 程序预先生成，生成算法会确保每个题目都有且仅有一个合法解。每次开始新游戏时，系统会从预生成的题目池中按顺序取出题目，同一难度下不会重复使用同一道题。
游戏支持键盘操作吗？
支持。你可以使用键盘数字键 1-9 直接填入数字，Backspace 或 Delete 键擦除当前格子的数字，Ctrl+Z 撤销上一步操作，方向键（↑↓←→）在格子间移动选择。所有操作都有对应的按钮，鼠标和键盘均可独立完成游戏。
评分是怎么计算的？
评分采用 sudoku.com 风格的计算方式：每次正确放置数字获得对应难度的分数（入门 15 分到极限 100 分），连续正确放置 3 次获得 1.5 倍奖励，5 次及以上获得 2 倍奖励。完成所有空格后，还会根据剩余时间获得额外的时间奖励（最高基础分的 50%）。错误和提示次数不影响得分，但会记录在完成报告中。