Anti-Consecutive Sudoku

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Virheet
0/3
Pisteet
-
Aika
00:00
Uusi peli
Edistyminen0%
Helppo · anti-peräkkäinen sudoku Vaihda vaikeustasoa ylhäältä ↑
Kuinka pelata anti-peräkkäis-Sudokua
Tavalliset sudokusäännöt pätevät. Lisäsääntö: mitkään kaksi suorassa kulmassa vierekkäistä solua (reunaa jakavat) eivät saa sisältää peräkkäisiä numeroita. Jos solu sisältää 5, kaikkien neljän naapurin täytyy välttää 4 ja 6.
Täydellinen opas →

Ortogonaalisesti vierekkäiset solut eivät saa sisältää peräkkäisiä numeroita

Mikä on Anti-Consecutive Sudoku?

Anti-Consecutive Sudoku (tiukempi muoto Non-Consecutive Sudokusta) asettaa säännön, että mitkään kaksi ortogonaalisesti vierekkäistä celliä eivät saa sisältää peräkkäisiä kokonaislukuja. Tämä variantti vaatii usein vähemmän annettuja digittejä, koska rajoite yksinään eliminoi niin monta candidate-paria. Se yhdistetään joskus Anti-Kingin tai Anti-Knightin kanssa luomaan erittäin rajoitettuja puzzleja.

Yhdellä silmäyksellä

RajoitetyyppiAnti-Constraints
tyypilliset aloitusluvut18–24
Vaikeustasoarvio ★★★☆☆ 3/5
Keskim. ratkaisuaika — Helppo5 min
Keskim. ratkaisuaika — Keskitaso13 min
Keskim. ratkaisuaika — Vaikea26 min
Keskim. ratkaisuaika — Asiantuntija48 min

Kuinka ratkaista Anti-Consecutive Sudoku

TekniikkaMitä se tekeeTaso
Global Candidate Pruning For every filled cell, remove its ±1 neighbours from all orthogonally adjacent cells immediately. Edistynyt
Digit 5 is Most Constrained 5 cannot be adjacent to 4 or 6. Use this to restrict placement of 5 across the entire grid. Edistynyt
Chain Propagation Placing a digit propagates constraints along rows and columns, often triggering a cascade of forced placements. Edistynyt
Forbidden Pair Maps Build a map of forbidden digit pairs for each adjacent pair of cells and use it to eliminate candidates systematically. Edistynyt

Keskimääräiset ratkaisuajat

Helppo
5 min
Keskitaso
13 min
Vaikea
26 min
Asiantuntija
48 min

Usein kysytyt kysymykset

Mitä on Anti-Consecutive Sudoku?
Anti-Consecutive Sudoku is a variant where no two orthogonally adjacent cells (horizontally or vertically neighbouring) may contain consecutive digits. The rule applies everywhere on the grid without any markers. Standard Sudoku rules also apply throughout.
How is Anti-Consecutive different from Non-Consecutive Sudoku?
Anti-Consecutive and Non-Consecutive Sudoku are the same constraint — the name is used interchangeably by different puzzle communities. Both mean: no two horizontally or vertically neighbouring cells may hold digits that differ by exactly 1.
Which digit placements trigger the most eliminations?
Digits in the middle of the range (4, 5, 6) eliminate two consecutive neighbours simultaneously. Placing a 5 removes both 4 and 6 from all four orthogonal neighbours, and placing those 4s and 6s in turn removes 3 and 7 from their neighbours — creating a cascade effect. Starting with central digits often unlocks large portions of the grid.
Is Anti-Consecutive Sudoku accessible for beginners?
The rule is simple and the early eliminations are satisfying and obvious. Easy puzzles are well-suited for Sudoku players who want a step up from classic without learning arithmetic (like Killer or Arrow). The non-consecutive constraint is entirely logic-based.
What is the best approach to Anti-Consecutive Sudoku?
Treat the anti-consecutive constraint as an additional elimination layer. After every digit placement, immediately update all four orthogonal neighbours to remove ±1 from their candidate lists. The more given digits you have to start with, the more these cascade eliminations interact.
How long does Anti-Consecutive Sudoku take to solve?
Easy puzzles take 5–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–55 minutes and expert puzzles can take 60–90 minutes. Expert puzzles with very few given digits rely entirely on the anti-consecutive constraint for deductions.
Kokeile myös
Ei-peräkkäinen sudoku
The same neighbour rule under its other common name — more puzzles for exactly the logic you've practised here.
Anti-King Sudoku
Extends the anti-adjacency idea diagonally: no digit may repeat within a king's move of itself.
Anti-Knight Sudoku
Stretches the forbidden relationship to L-shaped knight moves that leap across box borders.
Päivittäinen haaste