▦ 分割矩形Rectangle Split
在线分割矩形谜题：把整个方格盘切成若干长方形（正方形也算），每个长方形里恰好有一个数字，并且数字等于这个长方形的面积（格数）。拖动画出矩形，点一下删除，自动标红不合规的矩形。随机生成 5×5、7×7、9×9 三种大小，记录最快用时，任何合规的分法都算完成。Rectangle Split online: divide the whole grid into rectangles (squares count) so that each rectangle contains exactly one number, equal to its area in cells. Drag to draw a rectangle, tap one to delete it, and invalid rectangles turn red. Random 5×5, 7×7 and 9×9 puzzles with best times — any valid division counts as solved.
从一个角拖到对角画出矩形（会显示 宽×高=面积），与旧矩形重叠的会被替换；点一下已画的矩形可以删除，数字 1 的格子点一下即可。Drag from one corner to the opposite one to draw a rectangle (its size is shown); overlapped rectangles are replaced. Tap a rectangle to delete it; tap a 1 to box it.
玩法说明与常见问题How to play & FAQ
「分割矩形」怎么玩？How do I play Rectangle Split?
每个数字都要被一个长方形“装”起来，长方形的格数等于数字，且里面只能有这一个数字。所有长方形不能重叠，并且要铺满整个盘面。技巧：先处理大数字和角落的数字；质数（如 5、7）只能是一条 1 格宽的长条。Every number needs a rectangle around it whose area equals the number, with no other number inside. Rectangles may not overlap and must cover the whole grid. Tips: start with big numbers and corners; a prime like 5 or 7 can only be a one-cell-wide strip.
正方形算长方形吗？Do squares count?
算。例如数字 4 可以是 2×2 的正方形，也可以是 1×4 的长条。Yes. A 4 can be a 2×2 square or a 1×4 strip.
为什么我的矩形是红色的？Why is my rectangle red?
红色表示它包含的数字不止一个、没有数字，或者面积和数字不相等。Red means it holds no number, more than one, or its area does not match the number.
「分割矩形」免费吗？需要下载吗？Is Rectangle Split free? Do I need to download anything?
完全免费，无需注册、下载或安装，打开网页就能玩，手机、平板和电脑都支持；游戏完全在你的浏览器本地运行，不会上传任何数据。It is completely free with no sign-up, download or install — just open the page on a phone, tablet or computer. The game runs entirely in your browser and nothing is uploaded.