Sukar Palindrome Sudoku
Digit di sepanjang setiap garis bertanda dibaca sama ke hadapan dan ke belakang. Setiap palindrom mencerminkan logiknya sendiri.
Sukar Sudoku Palindrom. Garisan lebih panjang dan kurang digit diberi — jangkakan rantai palindrom melata dan tanda-pensel penjejakan.
3
8
9
6
7
9
2
4
7
8
2
1
2
6
5
1
7
7
8
1
8
4
5
8
2
3
4
Apakah Sudoku Palindrom?
Kesukaran
★★★☆☆
3/5
Jenis Kekangan
Kekangan Garis
Biasa Diberi
20–28
Purata Selesaikan (Sukar)
32 min
Teknik Penyelesaian untuk Tahap Sukar
| Teknik | Penerangan | Tahap |
|---|---|---|
| Mirror Pair Identification | In a palindrome of length L, cell i and cell L+1−i must share the same digit. Identify all mirror pairs before solving. | Pemula |
| Centre Cell Freedom | The central cell of an odd-length palindrome has no mirror constraint — it is only restricted by standard row/column/box rules. | Pemula |
| Mirror Propagation | Once one cell of a mirror pair is determined, immediately set its partner to the same value. | Pertengahan |
| Multi-Palindrome Intersection | If two palindromes share a cell, that cell must satisfy both palindrome relationships simultaneously. | Lanjutan |
Bersedia untuk ujian muktamad? Cuba Pakar Sudoku Palindrom — teka-teki paling sukar di Jom Main Sudoku.
Teknik untuk Dikuasai pada Sukar
- Hidden Pairs technique — Hard palindrome grids overlap lines so a cell mirrors into two different partners — intersecting three candidate lists exposes pairs invisible to any single unit scan.
- Teknik X-Wing — An elimination at one mirror cell exports to a distant row, so fish patterns assemble in rows the palindrome line never touches — check mirrors after every X-Wing.
Purata Masa Selesaikan mengikut Kesukaran
Mudah
7 min
Sederhana
16 min
Sukar
32 min
Pakar
58 min
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Varian Berkaitan
Sudoku Renban
Both put structure on a drawn line's digit set — renban demands a consecutive run where palindromes demand mirror symmetry.
Bisikan Jerman
Trades mirrored repetition for forced separation: adjacent line digits must differ by 5 or more.
Between Lines Sudoku
Endpoint-anchored lines where position on the line carries meaning, just as it does for palindrome mirror pairs.
Soalan Lazim — Sukar Sudoku Palindrom
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