Pakar Sandwich Sudoku
Petunjuk di luar grid memberikan jumlah digit yang diapit antara 1 dan 9 dalam setiap baris dan lajur.
Pakar Sudoku Sandwich. Teka-teki paling sukar di laman — persilangan julat-jumlah dan penalaran pariti merentas baris dan lajur. Tiada tekaan.
27
2
17
12
0
0
3
10
9
27
15
9
24
32
2
0
4
5
3
4
6
9
5
8
3
9
2
2
5
5
8
1
7
2
4
3
1
9
4
1
7
2
7
Apakah Sudoku Sandwich?
Kesukaran
★★★★☆
4/5
Jenis Kekangan
Petunjuk Luar
Biasa Diberi
4–10 clue values
Purata Selesaikan (Pakar)
85 min
Teknik Penyelesaian untuk Tahap Pakar
| Teknik | Penerangan | Tahap |
|---|---|---|
| Clue 0 Means Adjacent 1 and 9 | A sandwich clue of 0 means 1 and 9 are side-by-side with nothing between them. Place this pair immediately. | Pemula |
| Clue 35 Means 1 and 9 at Ends | A clue of 35 = 2+3+4+5+6+7+8. All middle digits are sandwiched, placing 1 and 9 at the two ends of the row/column. | Pemula |
| Position Enumeration | For each clue, enumerate all valid positions of 1 and 9 such that the enclosed digits sum to the clue. Cross-reference with column clues. | Pertengahan |
| Sandwich Intersection | Row and column clues intersect at one cell. Combining row positions of 1 and 9 with column positions pinpoints key placements. | Lanjutan |
| Digit Forcing from Both Sides | Use clues from both the row and column sides to triangulate the positions of 1 and 9 simultaneously. | Pertengahan |
Teknik untuk Dikuasai pada Pakar
- Teknik X-Wing — Expert sandwich grids leave several crust positions ambiguous deep into the solve — X-Wings on 1 and 9 are how those ambiguities are finally cut.
- Swordfish technique — When three rows each hold two possible 9 positions in the same three columns, the Swordfish settles all three sandwiches simultaneously — the classic expert sandwich finish.
Purata Masa Selesaikan mengikut Kesukaran
Mudah
12 min
Sederhana
26 min
Sukar
52 min
Pakar
85 min
Nak panduan lengkap peraturan, strategi, dan langkah penyelesaian?
Cara Bermain Sudoku Sandwich →
Varian Berkaitan
Killer Sudoku
Both are sum-deduction puzzles at heart — killer's 45 rule and sandwich's crust sums exercise the same arithmetic.
Skyscraper Sudoku
Outside clues again, but read as building visibility instead of sums — the same edge-of-grid deduction style.
Outside Sudoku
The gentlest outside-clue cousin: border digits simply belong in the nearest three cells, no arithmetic required.
Soalan Lazim — Pakar Sudoku Sandwic
Lebih soalan? Lihat penuh Panduan Sudoku Sandwich.