Sådan spiller du Non-Consecutive Sudoku
Ingen to ortogonalt tilstødende celler må indeholde konsekutive cifre
Reglerne
Standard Sudoku-regler gælder: udfyld hver række, kolonne og 3×3-boks med cifrene 1–9, hver forekommer præcis én gang.
Ikke-konsekutive Sudoku pålægger en global begrænsning: ingen to celler, der deler en kant (ortogonalt tilstødende), kan indeholde konsekutive cifre. Så hvis en celle indeholder 5, skal alle dens naboer undgå 4 og 6. Denne ene regel begrænser kandidatplaceringer dramatisk og kan reducere et standard antal givne cifre, mens den stadig producerer et unikt løseligt puslespil.
For hvor dette puslespil kom fra, hvordan det sammenlignes med relaterede varianter og et strategiresumé, se vores Non-Consecutive Sudoku variantoversigt.
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Sådan løser du Non-Consecutive Sudoku
Almindelige spørgsmål
Hvad er Non-Consecutive Sudoku? ▾
Non-Consecutive Sudoku is a variant where no two horizontally or vertically adjacent cells may contain consecutive digits. There are no markers on the grid — the non-consecutive rule applies globally to every pair of neighbours. Standard Sudoku rules also apply.
How does the global non-consecutive rule constrain the grid? ▾
Every pair of adjacent cells cannot differ by exactly 1. This means you cannot place a 4 next to a 3 or a 5. For every digit you place, you must eliminate that digit ±1 from all orthogonal neighbours. This propagates eliminations across the entire board immediately after every placement.
Which digits are most affected by the non-consecutive rule? ▾
Digits 1 and 9 can only be invalid next to 2 and 8 respectively — so they are least affected. Digit 5 cannot be adjacent to either 4 or 6, which is a moderate restriction. Digits 4, 5, and 6 are most affected because they are adjacent to two common digit pairs simultaneously.
Er Non-Consecutive Sudoku sværere end regular Sudoku? ▾
Yes, typically. The global constraint eliminates many more candidates than standard rules alone. Easy puzzles are accessible and resolve quickly. Hard and expert puzzles compensate with fewer given digits, making the non-consecutive constraint the primary source of all deductions.
What is the best first strategy for Non-Consecutive Sudoku? ▾
After placing each digit, immediately mark all orthogonal neighbours as unable to hold ±1. Scan rows and columns for digits that can now only go in one cell due to these combined eliminations. Digit 5 is particularly useful as a placement anchor — wherever 5 is placed, both 4 and 6 are eliminated from all four neighbours.
How long does Non-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. Non-Consecutive Sudoku rewards players who apply the constraint globally and systematically after every move.