websudoku.com
WebSudoku.com is a fast, free website for people who want classic Sudoku without a busy screen or a long setup.
What is WebSudoku.com?
WebSudoku.com is a browser game with a simple 9-by-9 Sudoku board.
The goal is to place the numbers 1 through 9 without repeating a number in any row, column, or small box.
Gideon Greenspan and Rachel Lee launched the site in 2005, according to its official FAQ.
The site says it grew to serve millions of visitors each month.
Its plain design has changed little over the years.
That old look may feel strange beside newer game apps, but it also helps the puzzle remain the main focus.
There are few screens to learn, and a new game can begin in seconds.
How do you play a puzzle?
Choose Easy, Medium, Hard, or Evil from the links above the board.
Click an empty square, enter a number, and keep working until every space is full.
The site provides simple solving tips, such as checking rows with only a few blank spaces.
It also tells players to use logic instead of guessing.
The “How am I doing?” button checks the board for mistakes.
This tool is useful when learning, but using it to correct an error means the final time will not receive a rank.
You can pause the timer when you need a break.
You can also request another random puzzle or select a puzzle by its number.
That puzzle number makes it easy to return to the same board or share a challenge with another person.
Are the difficulty levels fair?
The four levels are based on how much thought the puzzle needs, not just how many numbers appear at the start.
The difficulty guide says Easy puzzles use simple logic, while Evil puzzles need deeper steps.
Two puzzles in the same group can still feel different.
A Hard board may fit your way of thinking, while another Hard board may slow you down.
New players should start with Easy and move up only when they can finish without many guesses.
Medium is a good daily level because it asks for care without making every game feel like a long test.
Hard and Evil suit players who already know how to track several possible numbers.
Does Web Sudoku track your results?
The site shows your completion time and compares it with other clean solves.
Its published statistics use data from four million puzzles completed during one week.
The system removes games that lasted over two hours, used a pause, were chosen by number, or were corrected with the mistake checker.
These rules make the comparison more useful, although a fast time still does not prove that one person is a better solver.
The reported average is a median, which means half of accepted solves were faster and half were slower.
This small feature gives each puzzle a gentle sense of challenge without turning the site into a loud competition.
Can you use notes, phones, or printed puzzles?
The Options area can turn on pencil marks for possible answers.
On a phone or tablet, the site provides a special number pad, and its mobile guide explains how to add or remove several possible numbers.
The main game works in modern phone, tablet, and computer browsers.
Players may also print unlimited puzzles for personal use.
Printed pages may be copied without changes for family, friends, or a school class.
The site also offers printable daily variants such as Sudoku-X, Squiggly Sudoku, 12-by-12, 16-by-16, and Samurai Sudoku through its variation page.
Some larger grids and extra tools belong to the separate Web Sudoku Deluxe product.
Is WebSudoku.com safe and worth using?
You can play the normal game without giving the site your name or email address.
Its privacy policy says ordinary play shares basic data such as an IP address, browser details, and cookies.
Those cookies can remember game history and chosen options.
The site also says outside companies may provide ads or traffic tools, so those services may use their own cookies.
A private browser window or blocked third-party cookies can reduce this tracking.
WebSudoku.com is best for people who value speed, clear rules, printable boards, and a very large puzzle supply.
It is less suited to players who want bright art, daily rewards, animated lessons, or a modern game profile.
Its strongest quality is restraint because the site opens, presents a puzzle, and lets the player think.