分步数独求解器
粘贴任意一道数独，看求解器用人类解题技巧一步步走完 — 每一步都配有通俗讲解。
正在加载求解器…
这个解题器能做什么？
粘贴任意数独，它会按人的思路来解——一次一个人类技巧，按顺序推进，并为每一步推理给出通俗解释。这是学习工具而非答案机器：你可以在任意一步停下，读懂这一手为何是被迫的，然后回到自己的盘面。
怎么使用？
输入或粘贴盘面的 81 格（空格用 0 或点），然后逐步推进。每一步都会高亮相关格子并标明所用技巧。若卡住，通常说明需要阶梯之外的技巧，或你输入的盘面没有唯一解。
它掌握哪些技巧？
它沿着标准人类技巧的阶梯推进，总是先尝试能取得进展的最简单技巧——与人手解题的顺序一致。每个技巧都有独立说明页：
- · Naked Single — A Naked Single is a cell that has only one remaining candidate, so that value must go there.
- · Hidden Single — A Hidden Single is a digit that can legally go in only one cell within a row, column or box, even if that cell has other candidates.
- · Pointing (Locked Candidates) — Pointing is when all candidates for a digit inside a box fall on a single row or column, letting you eliminate that digit from the rest of that row or column.
- · Claiming (Locked Candidates) — Claiming is the mirror of pointing: when a digit's candidates in a row or column all fall inside one box, you eliminate that digit from the rest of that box.
- · Naked Pair — A Naked Pair is two cells in the same unit that share the same two candidates, letting you remove those two digits from every other cell in the unit.
- · Hidden Pair — A Hidden Pair is two digits that can only go in the same two cells of a unit, letting you strip all other candidates from those two cells.
- · X-Wing — An X-Wing is a rectangle pattern where a digit's candidates in two rows line up in the same two columns, allowing eliminations down those columns (or vice versa).
- · Swordfish — A Swordfish is the three-line generalization of the X-Wing: a digit confined to the same three columns across three rows, enabling column eliminations.
- · XY-Wing — An XY-Wing is a three-cell pattern (a pivot seeing two pincers) that forces a common digit out of any cell both pincers can see.
- · Forcing Chain — A Forcing Chain follows a sequence of 'if this, then that' implications until two starting assumptions converge on the same conclusion, which must therefore be true.
我的题目会被发送到别处吗？
不会。解题器完全在你的浏览器中运行——你输入的盘面不会被上传、存储或记录。它也不与我们的题库相连，只处 理你粘贴的内容。