Sudoku Solver

Fill each row, column and 3×3 box with 1–9, without repeats.

Enter clues · 9×9

Select a cell, then a number. Use 1–9, arrow keys and Delete on a keyboard. Editing hides the answer. Progress saves automatically.

Solution

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Enter 81 digits, or nine rows of nine digits. Use 0 or . for empty cells; whitespace separators are allowed.

数独求解器 — 规则与使用方法

每行、每列和每个 3×3 宫都填入 1–9，且数字不能重复。

如何录入和求解

点选格子，用数字面板或键盘录入题目中的数字，空格留空。
检查行、列和宫内是否有重复数字，再点击“求解”。
用上一步、下一步或进度条查看每一步填入的数字及其说明。
检查完整答案，每行、每列和每个 3×3 宫都应包含 1–9，且不重复。

需要注册或付费吗？

求解器免费使用，无需注册。谜题计算在浏览器中完成，录入的题目保存在当前浏览器；清除网站数据会删除这些记录。

没有找到答案怎么办？

先对照原题检查提示、尺寸和区域。显示“无解”表示录入的约束无法同时满足；取消或超时并不代表题目无解。可以先加载示例，确认录入与求解流程。

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Sudoku Solver — rules and how to use

Fill each row, column and 3×3 box with 1–9, without repeats.

Solve your puzzle

Select cells and use the number pad or keyboard to enter the given digits. Leave empty cells blank.
Check for repeated digits in rows, columns and boxes, then select Solve.
Use Previous step, Next step or the slider to review each digit and its explanation.
Check the full answer: each row, column and 3×3 box must contain 1–9 without repeats.

Do I need an account?

This solver is free and requires no account. Puzzle calculations run in your browser. Saved clues remain in this browser; clearing site data removes them.

What if no solution is found?

Check the clues and board size against the original puzzle. No solution means the entered constraints cannot all be satisfied. A cancelled or timed-out search does not prove that the puzzle has no solution. Use a built-in example to check the input workflow.

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