Spielanleitung für Größer-als-/Kleiner-als-Sudoku
Ungleichheitszeichen zwischen Zellen schränken ein, welche größer ist
Die Regeln
Standard-Sudoku-Regeln gelten: Füllen Sie jede Zeile, Spalte und jeden 3×3-Block mit den Ziffern 1–9, jede kommt genau einmal vor.
Greater Than Sudoku (auch Futoshiki-style Sudoku genannt) platziert < und > Ungleichheitszeichen zwischen benachbarten Zellen. Das Zeichen gibt an, welche der beiden Zellen den größeren Wert enthalten muss. Einige Varianten ersetzen alle gegebenen Ziffern durch Ungleichheitszeichen; andere bieten eine Mischform. Die Einschränkungen erzeugen Schlussfolgerungsketten: wenn A > B > C > D, dann A ≥ 4, B ≥ 3, C ≥ 2, D ≥ 1.
Um zu erfahren, woher dieses Rätsel stammt, wie es im Vergleich zu verwandten Varianten abschneidet und eine Strategiezusammenfassung, siehe unseren Größer-als-/Kleiner-als-Sudoku Variantenübersicht.
Auf einen Blick
Lösungsanleitung für Größer-als-/Kleiner-als-Sudoku
Häufige Fragen
Was ist Greater Than Sudoku? ▾
Greater Than Sudoku is a variant where inequality signs (< and >) appear between adjacent cells. Each sign shows which of the two neighbouring cells must hold a larger digit. Standard Sudoku rules apply — every row, column, and box contains 1–9 exactly once.
How do I use the inequality clues? ▾
Each inequality sign tells you the relative order of two neighbouring digits. If you see A > B, then A must be greater than B. You can chain inequalities — if A > B > C, then A is at least 3 and C is at most 7. Propagating minimum and maximum values through chains of inequalities is the core solving technique.
What is the most useful first move? ▾
Find cells that sit at the end of a long chain of inequalities pointing toward them — these cells must hold either the minimum or maximum value in the chain. A cell where five arrows all point away from it must hold the largest digit in all five relationships; combined with Sudoku constraints this often pins the digit immediately.
Is Greater Than Sudoku harder than regular Sudoku? ▾
It depends on difficulty level. Easy Greater Than puzzles are comparable to medium classic Sudoku. Hard and expert puzzles require systematic bound propagation across many overlapping inequality chains, which is substantially harder than any classic Sudoku difficulty.
Can I solve Greater Than Sudoku without arithmetic? ▾
Mostly yes — the inequalities involve relative ordering, not sums or products. The key skill is tracking minimum and maximum possible values for each cell as constraints propagate. Some players find this more intuitive than cage arithmetic in variants like Killer or Arrow Sudoku.
How long does Greater Than 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 take over 90 minutes. Longer inequality chains dramatically increase solve time at hard and expert levels.