Anti-Knight Sudoku

4
6
3
9
5
8
5
9
1
4
6
3
6
7
1
3
9
1
4
7
6
6
4
7
2
3
7
2
2
8
6
7
3
9
4
6
3
1
Fehler
0/3
Punktzahl
-
Zeit
00:00
Neues Spiel
Fortschritt0%
Einfach · Anti-Springer-Sudoku Schwierigkeit oben wechseln ↑
Spielanleitung für Anti-Knight Sudoku
Standard-Sudoku-Regeln gelten. Zusätzliche Regel: Keine zwei Zellen, die durch einen Springerzug (2+1 Felder in L-Form) erreichbar sind, dürfen dieselbe Ziffer enthalten. Die Einschränkung ist unsichtbar – es gibt keine Markierungen auf dem Spielfeld – behalte sie also beim Lösen im Hinterkopf.
Vollständiger Leitfaden →

Keine zwei Zellen, die einen Springerzug voneinander entfernt sind, dürfen dieselbe Ziffer enthalten

Was ist Anti-Knight Sudoku?

Anti-Springer-Sudoku erweitert Sudoku um eine Schachregel: Zwei beliebige Zellen, die durch einen Schachspringerzug (2+1 Felder in einer L-Form) voneinander erreichbar sind, dürfen nicht dieselbe Ziffer enthalten. Jede Zelle hat bis zu 8 potenzielle Springerzug-Nachbarn. Dies erzeugt ein reichhaltiges Einschränkungsnetzwerk, das getrennt von und über die Standard-Zeilen-/Spalten-/Boxen-Regeln hinausgeht.

Auf einen Blick

Constraint-TypAnti-Einschränkungen
Typische Vorgaben20–26
Schwierigkeitsbewertung ★★★☆☆ 3/5
Durchschn. Lösungszeit — Einfach5 Min.
Durchschn. Lösungszeit — Mittel12 Min.
Durchschn. Lösungszeit — Schwer24 Min.
Durchschn. Lösungszeit — Experte45 Min.

Lösungsanleitung für Anti-Knight Sudoku

TechnikWas es tutLevel
Knight-Zone Mapping For each cell, mark all potential knight-move destinations (up to 8 cells). None may share the same digit as the source cell. Fortgeschritten
Corner and Edge Advantage Corner cells have only 2 knight-move neighbours; edge cells have at most 4. These restricted zones are easiest to resolve first. Fortgeschritten
Knight Chains Placing a digit can eliminate it from a chain of knight-move positions that span diagonally across the grid. Fortgeschritten
Graph Coloring Model the knight-move network as a graph and two-color it to find cells that cannot share a digit. Fortgeschritten

Durchschnittliche Lösungszeiten

Einfach
5 Min.
Mittel
12 Min.
Schwer
24 Min.
Experte
45 Min.

Häufig gestellte Fragen

Was ist Anti-Knight Sudoku?
Anti-Knight Sudoku is a variant where no two cells that are a chess knight's move apart may contain the same digit. A knight moves in an L-shape: two cells in one direction and one cell perpendicular. This adds a non-adjacent constraint that reaches across boxes and rows in ways standard Sudoku cannot.
How far does the anti-knight constraint reach?
A knight's move covers up to eight possible cells: two squares in any cardinal direction plus one square perpendicular. These eight cells can span across different rows, columns, and boxes — so the anti-knight constraint connects parts of the grid that standard Sudoku treats as independent.
Is Anti-Knight Sudoku harder than regular Sudoku?
Yes. The knight-move relationships are less intuitive than row/column/box constraints and require deliberate mapping. Easy puzzles are accessible once you visualise the knight's reach. Hard and expert puzzles use the constraint to create deductions that would be impossible without it.
What is the hardest part of Anti-Knight Sudoku?
Remembering that the constraint spans across boxes. It is easy to forget that placing a 5 in the top-left corner eliminates 5 from cells that are in a completely different box. Systematically checking all eight knight-reach cells after every placement is essential.
Can standard Sudoku techniques still be used?
Yes — all standard techniques apply, with the knight-move relationships treated as additional elimination links. Naked pairs and hidden singles can be found by treating any two knight-move-related cells as a pair subject to uniqueness.
How long does Anti-Knight 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 often exceed 90 minutes. The key to faster solving is visualising the full knight-reach pattern automatically after each placement.
Auch ausprobieren
Anti-King Sudoku
The shorter-range chess rule — repeats forbidden among all eight touching cells rather than across L-shaped leaps.
Anti-Consecutive Sudoku
Trades geometric reach for value logic: orthogonal neighbours may never hold consecutive digits.
Non-Consecutive-Sudoku
Same constraint family — a global unmarked rule whose eliminations cascade after every placement.
Tägliche Herausforderung