⚖️ 加权涂格Weighted Grid
在线加权涂格谜题：每一列和每一行都有“权重”1、2、3……，涂黑的格子在行里按它所在的列号计分，在列里按它所在的行号计分。让每行右边、每列下方的数字恰好等于涂黑格子的权重之和。随机生成 4×4 到 7×7 的题目，和超出会变红提示，可打叉、撤销，记录最快用时。Weighted Grid puzzle online: columns and rows are weighted 1, 2, 3 … — a shaded cell adds its column number to its row total and its row number to its column total. Shade cells so every row total (right) and column total (bottom) is met exactly. Random 4×4 to 7×7 puzzles, red warnings when a sum is too big, crosses, undo and best times.
点击格子：空白 → 涂黑 → 打叉 → 空白；电脑上右键直接打叉。上方和左边的小数字是权重。Tap a cell: blank → shaded → cross → blank; right-click places a cross. The small numbers on top and left are the weights.
玩法说明与常见问题How to play & FAQ
「加权涂格」怎么玩？How do I play Weighted Grid?
第 c 列的格子权重是 c，第 r 行的格子权重是 r。某一行右边的数字，等于这一行所有涂黑格子的列号之和；某一列下方的数字，等于这一列所有涂黑格子的行号之和。例如一行的和是 4，可以涂第 4 列，也可以涂第 1 列和第 3 列——要结合列的条件才能确定。任何满足全部和的涂法都算正确。A cell in column c weighs c and a cell in row r weighs r. A row's number is the sum of the column numbers of its shaded cells; a column's number is the sum of the row numbers of its shaded cells. A row total of 4 could be column 4 alone or columns 1 and 3 — the column totals decide. Any shading that meets every total counts.
从哪里下手？Where do I start?
先找最大或最小的和：一行的和等于 1+2+…+N 说明整行涂满；和为 1 只能是第一格。还有，和等于 N 以内的较大数时，大权重的格子往往是关键。Look at the extremes: a row total of 1+2+…+N means the whole row is shaded, a total of 1 means only the first cell. Large totals usually hinge on the heavy cells.
数字变成红色是什么意思？What does a red number mean?
红色说明这一行或列已经涂得太多，和超过了目标；绿色表示正好相等。Red means that row or column already exceeds its total; green means it is exactly right.
「加权涂格」免费吗？需要下载吗？Is Weighted Grid 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.