Suguru vs KenKen: How the Two Number Puzzles Compare

At a glance, Suguru and KenKen look like cousins: both are grids carved into little cages that you fill with numbers using pure logic. Fans of one often wonder whether the other is worth a try, and the honest answer is that they're more different than they appear. One is built on arithmetic and the familiar row-and-column discipline of Sudoku; the other throws those out entirely and runs on a single clever idea about which numbers may touch. Here's a clear comparison of Suguru vs KenKen — how the rules differ, how each one feels to solve, and which to pick if you already love the other. Curious to try the number-touching puzzle? Play a Suguru puzzle and see.

The one-line difference

Here's the whole thing in a sentence: KenKen is a maths puzzle built on a Latin square, while Suguru is a pure-logic puzzle built on cages and a no-touching rule — with no arithmetic and no row or column constraint at all.

That single distinction shapes everything else. KenKen wants you to do sums; Suguru never asks you to add a thing.

How KenKen works

A KenKen (also called Calcudoku) is an n×n grid with two layers of rules:

1. The Latin square rule: every row and every column must contain the numbers 1 to n exactly once — just like Sudoku, minus the boxes.
2. The cage arithmetic: the grid is divided into cages, each printed with a target number and an operation (+, −, ×, or ÷). The digits in a cage must combine, using that operation, to hit the target. A cage marked "12×" needs digits that multiply to 12.

So solving a KenKen means juggling row/column logic and mental arithmetic at the same time. Notably, a digit can repeat within a KenKen cage, as long as the row-and-column rule is respected.

How Suguru works

Suguru is far more minimalist. The grid is divided into cages, and there are just two rules:

1. Each cage of N cells holds the digits 1 to N, once each — a three-cell cage has 1-2-3, a five-cell cage has 1-to-5.
2. No two identical digits may touch, including diagonally.

That's it. There's no arithmetic — the cages don't have targets or operations, they're simply filled with their run of digits. And there's no row or column rule — a number can appear several times in the same row, provided the copies never touch. The whole challenge comes from that diagonal-inclusive no-touching constraint.

Side by side

	KenKen	Suguru
Cages contain	Digits that hit an arithmetic target	The digits 1 to N (cage size)
Maths involved	Yes — add, subtract, multiply, divide	None
Row/column rule	Yes (Latin square, 1 to n once)	None
Adjacency rule	No	Yes — no equal digits touching, incl. diagonally
Can a digit repeat in a row?	No	Yes, if the copies don't touch
Core skill	Arithmetic + elimination	Pure spatial logic

Which feels harder?

It depends on what you enjoy. KenKen's difficulty is partly arithmetic load — you're constantly working out which factor pairs or sums fit a cage while also tracking the Latin square. If mental maths isn't your idea of fun, KenKen can feel like work.

Suguru's difficulty is purely logical. There's no calculating, just the patient elimination that the no-touching rule drives. Many solvers find Suguru more relaxing for that reason — it's all pattern and deduction, no sums — while others miss the arithmetic crunch that gives KenKen its bite. Neither is objectively harder; they exercise different muscles.

Which should you play?

If you love numbers and want a puzzle that keeps your mental arithmetic sharp, KenKen is the natural pick. If you'd rather have the satisfying logic of a number puzzle without doing any maths, Suguru is the one for you — it's the gentler entry point for anyone who finds KenKen's calculations tiring, yet it scales up to genuinely tough grids. Both are single-solution, no-guessing puzzles, so you can't go wrong.

The cleanest way to decide is simply to try the one you haven't. If that's the no-maths option, play a Suguru puzzle now, or learn the rules first. And if you're weighing up other cage puzzles, our Suguru vs Killer Sudoku comparison covers the next obvious cousin.

Frequently asked questions

What is the difference between Suguru and KenKen?

KenKen is a maths puzzle: it uses a Latin square (1 to n once per row and column) plus cages with arithmetic targets you reach by adding, subtracting, multiplying or dividing. Suguru has no arithmetic and no row/column rule — each cage simply holds the digits 1 to N, and no two identical digits may touch, including diagonally. The defining difference is that KenKen involves maths and Suguru is pure logic.

Is Suguru easier than KenKen?

For people who dislike mental arithmetic, Suguru often feels easier, because it involves no calculation at all — just the logical elimination driven by the no-touching rule. KenKen adds an arithmetic layer on top of Latin-square logic. Neither is objectively easier, but they challenge different skills.

Are Suguru and KenKen the same type of puzzle?

No. They look similar because both divide a grid into cages, but the rules are quite different. KenKen is a Latin-square arithmetic puzzle, while Suguru is a pure-logic puzzle with no row/column rule and no maths, relying instead on a diagonal-inclusive no-touching constraint.

If I like KenKen, will I like Suguru?

Very possibly — you already enjoy filling cages with logic. The main adjustment is dropping the arithmetic and the row/column rule, and getting used to the no-touching constraint instead. Many KenKen fans enjoy Suguru as a more relaxing, maths-free alternative.