Útvísar Sudoku
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Framvinda0%
Auðvelt · Outside Sudoku
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Hvernig á að spila Outside Sudoku
Standard Sudoku reglur gilda. Hver tala sem sýnd er utan ristarinnar verður að birtast innan fyrstu þriggja reita þeirrar línu eða dálks (næsta 3x3 kassa). Blá vísbendingar á vinstri/hægri vísa til fyrstu/síðustu þriggja reita þeirrar línu; blá vísbendingar á toppi/botni vísa til fyrstu/síðustu þriggja reita þess dálks.
Fullur leiðarvísir →
Tölustafir utan grindarinnar verða að birtast í fyrstu þrem reitum þeirrar röðar eða dálks.
Útvísar Sudoku Auðvelt
Útvísar Sudoku Miðlungs
Útvísar Sudoku Erfitt
Útvísar Sudoku Sérfræðingur
Hvað er Útvísar Sudoku?
Outside Sudoku setir tölustafi í jaðra grindarinnar. Hver utan tölustafur verður að birtast í einum af fyrstu þremur reitum (næsta kassa) línunnar eða dálksins sem hann vísar til. Engin standard gefin tölustafir eru veittir inni í grindinni — allar vísbendingar koma frá jaðrunum. Þetta skapar óvenjulegt form af Sudoku þar sem upphafsþröngin koma alveg utan frá grindinni.
Í fljótu bragði
| Takmörk tegund | Útvísar ábendingar |
| Dæmigerðar gefnar tölur | 28–36 given + 4×9 outside clues |
| Erfiðleikamat | ★★★☆☆ 3/5 |
| Meðal. leysingartími — Auðvelt | 8 mín |
| Meðal. leysingartími — Miðlungs | 18 mín |
| Meðal. leysingartími — Erfitt | 36 mín |
| Meðal. leysingartími — Sérfræðingur | 65 mín |
Hvernig á að leysa Útvísar Sudoku
| Tækni | Hvað það gerir | Stig |
|---|---|---|
| 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. | Framhaldið |
| 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. | Framhaldið |
| 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. | Framhaldið |
| 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. | Framhaldið |
| 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. | Framhaldið |
Meðalleysingartímar
Auðvelt
8 mín
Miðlungs
18 mín
Erfitt
36 mín
Sérfræðingur
65 mín
Algengar Spurningar
Hvað er Outside Sudoku?
Outside Sudoku is a variant where digits appear outside the grid's borders, one or more per row and per column. Each outside digit must appear somewhere within the first three cells of the row or column it points into (the nearest three to that outside clue). Standard Sudoku rules apply throughout.
How far into the grid do outside clues reach?
Each outside clue constrains only the first three cells of its row or column — the three cells nearest to where the clue is placed. A clue on the left side of row 5 means that digit must be in column 1, 2, or 3 of row 5. A clue on the top of column 4 means that digit must be in row 1, 2, or 3 of column 4.
Can an outside digit appear in any of the three cells?
Yes — the clue only guarantees the digit is somewhere in those first three cells, not which one. When multiple outside clues constrain the same three-cell window, their interactions can pin specific cells very precisely. Cross-referencing horizontal and vertical outside clues is the primary solving technique.
Is Outside Sudoku hard to learn?
The rule is simple but the deductions require careful accounting of which digits must appear in which windows. Easy puzzles are accessible for Sudoku players of all levels. Harder puzzles demand systematic tracking of all outside constraints simultaneously across every border.
What is the best first move in Outside Sudoku?
Find rows or columns where outside clues constrain all three cells in the first window. If three different clues each point to the same window, those three cells are fully determined in terms of which digits they contain (though not necessarily in which order). This is the fastest path to early placements.
How long does Outside Sudoku take to solve?
Easy puzzles take 8–18 minutes. Medium puzzles run 18–35 minutes. Hard puzzles average 35–65 minutes and expert puzzles can exceed 90 minutes. The key variable is how many outside clues are provided and how tightly they constrain each three-cell window.