⋖ 不等号数独Inequality Sudoku
在线不等号数独：在 5×5 到 7×7 的方格里填数字，每行每列 1 到 N 各出现一次，同时满足相邻格子之间的大于号、小于号。题目随机生成且保证唯一解，三档难度，支持撤销、检查、提示和计时，手机电脑都能玩。Play inequality sudoku online: fill a 5×5 to 7×7 grid so every row and column contains 1 to N exactly once while obeying the greater-than and less-than signs between neighbouring cells. Randomly generated puzzles with a unique solution, three levels, undo, check, hints and a timer, on phone or computer.
点选一个格子，再按数字键或下方数字按钮填入；方向键移动，Backspace 擦除。格子之间的 “<” “>” 尖角指向较小的数字，红色表示冲突。Select a cell, then type a digit or tap a number below; arrow keys move and Backspace erases. The point of each “<” or “>” between cells faces the smaller number; red marks a conflict.
玩法说明与常见问题How to play & FAQ
「不等号数独」怎么玩？How do I play Inequality Sudoku?
这是一种拉丁方谜题：N×N 的格子里，每一行、每一列都要恰好出现一次 1 到 N。和普通数独不同的是，它没有宫的限制，而是在一些相邻格子之间画着不等号，必须让填入的两个数满足大小关系。先找不等号链条的两端：一串连续变大的格子里，最小的一定很小、最大的一定很大，再结合行列排除就能逐步推出答案。This is a Latin-square puzzle: every row and every column of the N×N grid must contain 1 to N exactly once. Unlike ordinary sudoku there are no boxes; instead some neighbouring cells have an inequality sign between them that the two numbers must obey. Start at the ends of inequality chains — in a run of increasing cells the first must be small and the last large — then combine with row and column elimination.
题目一定有唯一解吗？Does every puzzle have a unique solution?
是的。每道题生成后都会用求解器验证只有一个解，所以完全可以靠推理完成，不需要猜。Yes. Every generated puzzle is checked by a solver to have exactly one solution, so it can be solved by logic alone without guessing.
提示会影响成绩吗？Do hints affect my record?
使用提示后仍然可以完成题目，但这一局不会计入最快纪录。You can still finish after using a hint, but that game won't count towards your best time.
「不等号数独」免费吗？需要下载吗？Is Inequality Sudoku 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.