Sukaku
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如何玩Sukaku數獨
每個單元格以一組候選數字顯示為鉛筆標記開始。按數字從所選單元格中消除該候選數。當只剩下一個候選數時，數字自動放置。顯示單個大數字的單元格是固定的，無法修改。標準數獨行、列和宮規則適用。
完整指南 →
一種鉛筆標記風格的變體，其中線索以候選集合的形式給出
什麼是 Sukaku？
Sukaku (數角) 是一種 Sudoku 變體，其中每個格並非給定數字，而是給定一組可能的候選數字。解題者必須使用標準 Sudoku 邏輯消除候選數字，直到每個格只剩下一個候選數字。有些 Sukaku 謎題提供非常稀疏的候選數字集（近乎完整的給定數字），而其他則提供完整或近乎完整的候選數字列表，需要高級技巧才能解決。
一覽
| 約束類型 | Pencilmark Elimination |
| 典型給定數字 | All candidates shown |
| 難度評級 | ★★★☆☆ 3/5 |
| 平均解題時間 — 簡單 | 8 分鐘 |
| 平均解題時間 — 中等 | 18 分鐘 |
| 平均解題時間 — 困難 | 35 分鐘 |
| 平均解題時間 — 專家 | 62 分鐘 |
如何解 Sukaku
| 技巧 | 它的作用 | 等級 |
|---|---|---|
| Candidate Scanning | Start by scanning rows, columns, and boxes — any candidate appearing in only one cell in a group must be placed there. | 進階 |
| 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. | 進階 |
| 裸單 | 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. | 進階 |
| 隱藏單 | 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. | 進階 |
| 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. | 進階 |
平均解題時間
簡單
8 分鐘
中等
18 分鐘
困難
35 分鐘
專家
62 分鐘
常見問題
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.
素數獨與常規數獨有何不同？
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.