Knowess
From guess to know. A modern number deduction game designed to challenge your logical thinking and problem-solving skills. Play now for free.
From guess to know. A modern number deduction game designed to challenge your logical thinking and problem-solving skills. Play now for free.
This page is designed to help you find out whether Knowess is good and if it is the right choice for you.
Knowess is a free, browser-based number deduction game where you crack a secret code using logical thinking and feedback clues. Most number games are either too simple or hide their rules behind complexity. Knowess strips it back to pure logic: guess the secret number, read the feedback, eliminate the impossible, and close in on the answer. With two distinct feedback modes and fully adjustable difficulty, it's the kind of puzzle you can finish in two minutes — or spend all day perfecting.
Listed in
Two Feedback Modes
Any Match or Exact Match — two distinct deduction strategies built into the same game.
Daily Challenge
A new puzzle every day with fresh hint clues, reset at midnight UTC.
Zero Friction
No account, no download — open the URL and play instantly in any browser.
Knowess started as a personal project to explore the design space of constraint-based number puzzles. The classic Mastermind format felt underrepresented in modern web games — most implementations are visually dated or buried in ads. The goal was to build a clean, fast, and genuinely replayable version with more player control over the rules.
Next.js (App Router), TypeScript, Tailwind CSS, React, deployed on Vercel.
Knowess is a free-to-play game with no paying customers. It serves individual players directly — no B2B customers or enterprise accounts.
Knowess offers two distinct feedback modes — Any Match and Exact Match — that go beyond the standard Bulls & Cows formula. Each mode requires a fundamentally different deduction strategy, and players can also adjust the number length (3–10 digits) and toggle repeated digits. The Daily Challenge adds a fresh puzzle every day with structured hint clues unique to each session.
Most number deduction games lock you into one feedback style. Knowess lets you choose your mode, set your difficulty, and jump straight into play — no account, no download, no ads cluttering the interface. It's designed around pure logical deduction with a clean, distraction-free UI.
Logic puzzle enthusiasts, casual brain-training players, and anyone who enjoys deduction-based games like Wordle, Mastermind, or Sudoku. The adjustable difficulty makes it accessible to beginners while the harder configurations (10 digits, repeats enabled) appeal to experienced puzzle solvers.
We have collected here some useful links to help you find out if Knowess is good.
Check the traffic stats of Knowess on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Knowess on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Knowess's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Knowess on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
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