Sudoku Challenge Pro — Simple Software Solutions

$4.99 One-time purchase · 2 devices · no subscription

What it is

Classic Sudoku, built for people who actually play it.

Nine by nine, one to nine, no repeats in a row, column, or box. Five levels from Beginner to Brainiac. Pencil marks for working through candidates, three hints per game when you want them, and a Check button that tells you where you've gone wrong without giving the answer away.

There are no adverts, no sign-up, no data collection and no internet requirement. Buy it once and it’s yours to use on two of your own devices, for as long as you like.

Watch it

Features

Five difficulty levels

Beginner, Easy, Medium, Hard and Brainiac — from a gentle start to a properly hard board.

Pencil marks

Mark candidates in any cell to track your logic. They don’t count against your click score.

Hints and checking

Three hints a game, and a Check button that shows mistakes without solving it for you.

Music while you play

Easy listening, upbeat or country — sixty tracks, shuffled, with a skip button.

Nature sounds

Ocean, seagulls and woodland, each on its own slider. Mix them however you like, or leave them off.

Badges to earn

Milestones for every level, with the Brainiac badges reserved for flawless games.

Multiple players

Everyone in the house keeps their own scores, times and badges on the same computer.

Competition mode

Fixed conditions for a fair comparison when more than one of you is chasing the same board.

Light and dark themes

Switch whenever you like — the whole board and panel follow.

Screenshots

Shown on Windows. The game runs in a resizable window.

Beginner board, dark theme — Beginner, dark theme — pencil marks in the top corners of cells

Medium board, light theme — Medium, light theme

Hard board — Hard — fewer givens to work from

Brainiac board — Brainiac — the hardest the game goes

Sound mixer — The sound mixer — music style, ocean, seagulls, woodland and effects, each on its own slider

Options panel — Options — competition mode, mistake highlighting, auto-clearing pencil marks and more

Scores table — Your times and click counts, kept per level and per player

Awards — Badges for each level — earned ones light up

Manage players — Add a player for everyone in the house

Built-in guide — A proper built-in guide — basics, strategies, controls and tips

How activation works

You’ll paste a license key once, and then never again. Your key arrives by email the moment you buy. The first time you open the game it checks the key and remembers this device — after that it runs completely offline, with no further checks, for good. Your key covers two devices, and there’s a button inside the game to move it to a new one.

Details

Platform	Windows 10 and 11
Price	$4.99, one-time. No subscription, nothing to renew.
Devices per license	2, movable at any time
Internet required	Once, to activate. Never again after that.
Data collected	None
Advertising	None
Music included	60 tracks across three styles, plus ocean, seagull and woodland ambience
Refunds	Within 7 days if it doesn’t run on your system — see the License Agreement
Also on	Steam

$4.99 Download and key emailed immediately

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