複製數獨
3
9
6
4
9
8
5
4
6
3
7
2
1
9
3
7
8
9
1
6
6
9
2
1
5
2
1
9
7
4
8
9
7
1
2
5
6
3
複製A
複製B
兩個區域必須有相同的數字
如何遊玩克隆數獨
適用標準數獨規則。兩個突出顯示的區域（琥珀色的克隆 A 和紫色的克隆 B）必須包含相同的數字排列 — 對應的儲存格必須持有相同的數字。在一個克隆中放置數字會自動約束另一個克隆中的相同位置。
完整指南 →
標記區域必須包含相同的數字排列
什麼是 複製數獨？
Clone Sudoku 在網格上標記區域對（clones）。每對 clone 區域必須包含完全相同的數字排列——如果一個 clone 在其左上角單元格有3，則另一個 clone 必須在其對應的單元格也有3。Clone 約束創造了強大的基於對稱的推導，可以一次解決整個區域。
一覽
| 約束類型 | Clone Regions |
| 典型給定數 | 24–32 |
| 難度評分 | ★★★★☆ 4/5 |
| 平均解題時間 — 簡單 | 10分鐘 |
| 平均解題時間 — 中等 | 22分鐘 |
| 平均解題時間 — 困難 | 42分鐘 |
| 平均解題時間 — 專家 | 72分鐘 |
如何解 複製數獨
| 技巧 | 它的作用 | 等級 |
|---|---|---|
| Clone Pair Deduction | Any digit placed in one clone region immediately forces the same digit in the corresponding cell of the other clone region. | 進階 |
| Constraint Propagation | A clone placement propagates through standard row, column, and box constraints in both regions simultaneously. | 進階 |
| Clone-Box Interaction | If both clone regions share boxes with heavily constrained cells, the clone constraint rapidly resolves entire boxes. | 進階 |
| Mirror Elimination | When a digit is eliminated from a position in one clone region by standard logic, it can be eliminated from the same position in the other clone region. | 進階 |
| Multi-Clone Logic | With two clone regions, solving either provides equal information about both. Alternate deduction paths between clones for maximum efficiency. | 進階 |
平均解題時間
簡單
10分鐘
中等
22分鐘
困難
42分鐘
專家
72分鐘
常見問題
什麼是 Clone Sudoku？
Clone Sudoku is a variant where two highlighted regions of the same shape appear on the grid. The two regions are 'clones' — they must contain exactly the same digit arrangement. Every cell in one region holds the same digit as the corresponding cell in the other region. Standard Sudoku rules apply.
How do the clone regions correspond?
The two clone regions are the same shape and size. Each cell in one region is paired with the corresponding positionally-equivalent cell in the other region. Placing a digit in any cell of one clone immediately fixes that digit in the matching cell of the other clone.
Can clone regions overlap with the same rows or columns?
Yes. The puzzle constructor ensures that the clone constraint is always consistent with Sudoku rules — the two regions are positioned so that corresponding cells are in different rows, columns, and boxes, allowing the same digit to appear in both without violating uniqueness.
Is Clone Sudoku harder than regular Sudoku?
The clone constraint effectively halves the number of independent cells to solve — every deduction in one region automatically applies to the other. Easy Clone puzzles resolve noticeably faster than classic Sudoku. Hard and expert puzzles use the clones to create complex bi-directional constraint chains.
What is the best strategy for Clone Sudoku?
Treat the two clone regions as a single constraint. Whenever you eliminate a candidate from a cell in one region, immediately eliminate it from the corresponding cell in the other. Focus on the rows, columns, and boxes that interact with both regions simultaneously.
How long does Clone Sudoku take to solve?
Easy puzzles take 6–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–60 minutes and expert puzzles can take 60–90 minutes. The bilateral nature of the clone constraint makes mid-game breakthroughs especially satisfying.