🐂 憋死牛Pong Hau Ki
在线憋死牛：流传很广的中国传统小棋，也叫“走四路”“憋死猫”。四个角加一个中心共 5 个点，上面两个角之间是水塘不通路，双方各 2 颗子，轮流沿线走进唯一的空点，谁先被堵得无路可走谁就输。规则一分钟学会，却很考验预判，支持人机三档难度、双人对战和悔棋。Pong Hau Ki online — a traditional Chinese mini board game also known as 憋死牛 (“block the ox”). Four corners and a centre make five points, the two top corners are separated by a pond, and each side has two pieces. Take turns sliding along a line into the single empty point; whoever is blocked with no move loses. Learn it in a minute — three computer levels, two-player mode and undo.
点能走的棋子（绿点）就会走进空点；能走的方向只有一个时点一下就走。Tap a piece with a green dot to slide it into the empty point.
玩法说明与常见问题How to play & FAQ
「憋死牛」怎么玩？How do I play Pong Hau Ki?
棋盘有 5 个点：四个角和中心。连线是两条对角线、左右两条竖边和下面的横边，上面两个角之间是水塘，不能直接走。红方两颗子在下面两个角，蓝方两颗子在上面两个角，中心是空的。双方轮流把自己的一颗子沿线走到相邻的空点（全盘只有一个空点）。轮到谁走却没有子能动，谁就被“憋死”输了。The board has five points: four corners and the centre. Lines run along both diagonals, the left and right sides and the bottom edge; a pond sits between the two top corners, so there is no path there. Red starts on the bottom corners, Blue on the top corners, the centre empty. Players alternate sliding one piece along a line into the adjacent empty point (there is only ever one). If you cannot move on your turn, you are blocked and lose.
憋死牛为什么常常下不完？Why do games often go on and on?
双方都不犯错时，棋子会一直绕着中心转圈，所以走满 60 步还没分出胜负就算和棋。真正的胜负来自一方走错——尤其是把子走进中心的时机。With perfect play the pieces just circle around the centre, so 60 moves without a result is a draw. Games are decided by mistakes, especially when a piece steps into the centre.
电脑三档有什么区别？How do the computer levels differ?
简单档经常随手走；中等档只往前看几步；困难档会把所有变化算到底，基本不会输。Easy often plays a random move, Normal looks a few moves ahead, and Hard searches the whole game and practically never loses.
「憋死牛」免费吗？需要下载吗？Is Pong Hau Ki 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.