Sukaku
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如何玩候选数数独
每个单元格都以一组铅笔标记形式的候选数开始。按一个数字可从选中的单元格中删除该候选数。当只剩下一个候选数时，该数字会自动填入。显示单个大数字的单元格是固定的，无法修改。标准数独的行、列和宫规则适用。
完整指南 →
一种铅笔标记风格的变体，其中线索以候选数集的形式给出
什么是Sukaku？
数角 (数角) 是数独的一种变体，其中每个单元格不是给定数字，而是给出一组可能的候选数。解题者必须使用标准数独逻辑消除候选数，直到每个单元格只剩下一个候选数。一些数角谜题提供非常稀疏的候选集（近乎完整的给定数），而其他谜题则提供完整或近乎完整的候选列表，需要高级技巧来解决。
一览
| 约束类型 | Pencilmark Elimination |
| 典型给定数 | All candidates shown |
| 难度评级 | ★★★☆☆ 3/5 |
| 平均解题时间 — 简单 | 8 分钟 |
| 平均解题时间 — 中等 | 18 分钟 |
| 平均解题时间 — 困难 | 35 分钟 |
| 平均解题时间 — 专家 | 62 分钟 |
如何解Sukaku
| 技巧 | 它的作用 | 级别 |
|---|---|---|
| Candidate Scanning | Start by scanning rows, columns, and boxes — any candidate appearing in only one cell in a group must be placed there. | 高级 |
| Cross-Hatch Elimination | When a digit is placed (or reduced to one candidate), eliminate it from all cells in the same row, column, and box. | 高级 |
| 显性单数 | A cell with only one remaining candidate is a naked single — the digit is forced. In Sukaku, this happens automatically when you eliminate down to one candidate. | 高级 |
| 隐性单数 | A candidate that appears exactly once in a row, column, or box must be placed in that cell regardless of how many other candidates that cell shows. | 高级 |
| Pair Elimination | Two cells in a group that share only the same two candidates form a naked pair — both candidates can be eliminated from all other cells in that group. | 高级 |
平均解题时间
简单
8 分钟
中等
18 分钟
困难
35 分钟
专家
62 分钟
常见问题
What is Sukaku?
Sukaku is a Sudoku variant where every cell in the 9×9 grid starts pre-filled with a set of pencilmark candidates instead of given digits. Your task is to eliminate incorrect candidates using standard Sudoku rules until exactly one digit remains in each cell. All 81 cells begin with multiple possibilities.
Sukaku与常规数独有何不同？
In classic Sudoku, some cells are pre-filled with confirmed digits. In Sukaku, no cell has a confirmed digit — instead, each cell shows a subset of possible digits as pencilmarks. The starting pencilmarks are curated by the puzzle constructor and are always consistent with the unique solution.
Are the starting pencilmarks always correct?
Yes. The pencilmarks shown at the start of a Sukaku puzzle represent a valid subset of candidates for each cell — they are never wrong, but they may include more candidates than strictly necessary. Your job is to eliminate all but the correct digit using logical deductions.
What techniques work best in Sukaku?
All standard Sudoku elimination techniques apply: naked singles (when only one candidate remains in a cell), hidden singles (when a digit can only go in one cell within a row, column, or box), naked pairs, pointing pairs, and advanced techniques like X-Wings and Swordfish. The absence of given digits means you rely entirely on elimination.
Is Sukaku harder than regular Sudoku?
Easy Sukaku is more forgiving than classic Sudoku because the pencilmarks are already provided — you never have to work out candidates from scratch. Hard and expert Sukaku puzzles with minimal starting candidates require the same advanced techniques as difficult classic Sudoku.
How long does Sukaku take to solve?
Easy puzzles take 5–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–60 minutes and expert puzzles can take over 90 minutes. Solve time scales with how many eliminations each technique step provides.