Sukar Outside Sudoku
Petunjuk di luar grid memberikan tiga digit pertama yang ditemui dalam baris atau lajur tersebut — tetapi bukan tertibnya.
Sukar Outside Sudoku. Kurang petunjuk sempadan dan interaksi lebih ketat — jangkakan deduksi pelbagai langkah dan tanda-pensel kerja.
7
5
9
5
9
2
7
1
8
5
3
4
8
3
1
7
9
4
7
4
2
6
8
7
6
4
6
3
5
8
9
3
7
6
5
2
7
3
2
9
3
5
6
1
2
8
4
7
3
5
8
8
7
5
6
4
3
6
8
1
4
9
5
Apakah Outside Sudoku?
Kesukaran
★★★☆☆
3/5
Jenis Kekangan
Petunjuk Luar
Biasa Diberi
28–36 given + 4×9 outside clues
Purata Selesaikan (Sukar)
36 min
Teknik Penyelesaian untuk Tahap Sukar
| Teknik | Penerangan | Tahap |
|---|---|---|
| Clue-Zone Mapping | Each outside digit must appear in the nearest 3 cells of its row or column. Map all outside clues to their zones immediately. | Pemula |
| Cross-Side Reasoning | If left clue digit X must be in cols 1–3, and right clue digit X is in the same row, that row already places X — the other side confirms its column. | Pertengahan |
| Box-Side Interaction | An outside clue for a row interacts with the box containing cols 1–3. If the row's box is heavily constrained, the outside digit's position may be forced. | Pertengahan |
| Digit Elimination from Clues | When a clue digit is placed in the zone, eliminate it from the rest of the zone row/col using standard Sudoku logic. | Pertengahan |
| Dual-Side Chains | Combine left and right clues for the same row: both digits restrict the same three columns from opposite ends, leaving the middle box fully determined. | Lanjutan |
Bersedia untuk ujian muktamad? Cuba Pakar Outside Sudoku — teka-teki paling sukar di Jom Main Sudoku.
Teknik untuk Dikuasai pada Sukar
- Hidden Pairs technique — Opposite-side clues squeeze a row from both ends, stripping middle candidates — recount the centre box of heavily-clued rows, where hard outside grids hide their pairs.
- Teknik X-Wing — Clue windows fix which third of each line a digit occupies; when two rows confine a digit to the same two columns inside their windows, the X-Wing clears both columns.
Purata Masa Selesaikan mengikut Kesukaran
Mudah
8 min
Sederhana
18 min
Sukar
36 min
Pakar
65 min
Nak panduan lengkap peraturan, strategi, dan langkah penyelesaian?
Cara Bermain Outside Sudoku →
Varian Berkaitan
Skyscraper Sudoku
The next step in border-clue logic — outside numbers become visibility counts that constrain entire row orderings.
Sudoku Sandwich
Border clues with arithmetic teeth: each one is the sum of the digits trapped between 1 and 9.
Killer Sudoku
Moves the clue layer inside the grid as summed cages — a natural graduation from window placement to sum deduction.
Soalan Lazim — Sukar Sudoku Luar
Lebih soalan? Lihat penuh Panduan Outside Sudoku.