🌉 数桥Bridges Puzzle
在线数桥（搭桥）逻辑谜题：在小岛之间横向或纵向架桥，每个岛上的数字就是连到它的桥数，两岛之间最多两座桥，桥不能交叉，最后所有岛要连成一片；三种尺寸随机生成，拖动或点击架桥，岛满了会变绿，带悔棋、提示和最快纪录。Play the bridges puzzle online: connect the islands with horizontal or vertical bridges so each island has exactly as many bridges as its number. At most two bridges join any pair, bridges may not cross, and all islands must end up connected. Three random sizes, drag or tap to build, islands turn green when complete, with undo, hints and best times.
从一个岛按住朝另一个岛的方向拖动就能架桥；也可以先点一个岛再点同一直线上的另一个岛，或者直接点两岛之间的水面。重复操作会在 1 座桥 → 2 座桥 → 拆除之间切换（右键反向切换）。岛上的桥数刚好等于数字时变绿，超过时变红。键盘：方向键在岛之间移动，Shift+方向键架桥，U 悔棋，H 提示。Press on an island and drag towards another to build a bridge; or tap one island and then another in the same line, or tap the water between them. Repeating cycles one bridge → two bridges → none (right-click cycles backwards). An island turns green when it has exactly its number of bridges and red when it has too many. Keyboard: arrows move between islands, Shift+arrow builds, U undo, H hint.
玩法说明与常见问题How to play & FAQ
「数桥」怎么玩？How do I play Bridges Puzzle?
每个圆圈是一个小岛，里面的数字表示要有几座桥连到这个岛。桥只能横着或竖着连接同一行或同一列上中间没有阻挡的两个岛，同一对岛之间最多架两座桥，桥和桥不能交叉。当每个岛的桥数都正好等于它的数字，而且所有岛能通过桥互相到达时，谜题就解开了。Each circle is an island and its number says how many bridges must connect to it. Bridges run only horizontally or vertically between two islands in the same row or column with nothing in between; a pair can have at most two bridges, and bridges may never cross. The puzzle is solved when every island has exactly its number of bridges and all islands are linked into one connected group.
从哪里开始推理？Where do I start?
先找“必然”的岛：比如角落里的 4 只有两个邻居，必须各连两座桥；只有一个邻居的 1 或 2 也能直接确定。另外数字为 8 的岛四个方向都要架两座桥。确定的桥画上之后，周围的岛选择就会变少。Look for forced islands: a 4 in a corner has only two neighbours, so it needs two bridges to each; a 1 or 2 with a single neighbour is fixed too, and an 8 needs double bridges in all four directions. Once those are drawn, the islands around them have fewer options.
我的答案和提示不一样还算对吗？Does my answer count if it differs from the hint?
算。只要满足所有规则（桥数正确、不交叉、全部连通），游戏就会判定通关；提示只是按生成时的那一种解法给出参考。Yes. As soon as every rule is satisfied — correct bridge counts, no crossings, everything connected — the puzzle counts as solved. Hints simply follow the solution the puzzle was generated from.
「数桥」免费吗？需要下载吗？Is Bridges Puzzle 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.