Sudoku BLA

Sudoku, pure and simple.

A logic puzzle, no arithmetic, only deduction. Learn the rule and you know how to play.

Every empty cell holds 1 to 9 candidates. Your job is to rule them out until one is left. Each clue unlocks the next. It is like a suspense series, minus the jump scares, pure investigation.

8000 GRIDS, 4 LEVELS

Easy, to switch off in the elevator. Medium, to clear your head in 15 to 20 minutes. Hard, for when your brain asks for something to chew on. Expert, to get properly stuck and come back with a cool head.

All of it open from day one.

BOOKS OF 25 PAGES

The grids live in books, and the books on a shelf. You open where you left off, and the app knows the next unfinished page of that level. Finishing a book is a visible milestone, not a number that climbs on its own.

TODAY'S PUZZLE

A new grid every day, with a calendar and a streak. Miss a day and the calendar keeps your place.

THE HINT THAT TEACHES

Asking for help does not hand you the answer: the app lights up the region, walks through the reasoning step by step and gives the move back to you. When no technique applies, then it reveals the cell.

Two ways to learn: a tour of the interface, over the real game, and eleven deduction techniques in interactive scenarios, from the naked single to the Swordfish.

THE ALMANAC

134 stamps to collect, each with its own name and a short story. Some you have already earned without knowing. Playing also unlocks new icons for the app.

BUILT TO LAST

No ads. No data collection. No subscription. No notifications. No login. No account.

You play, you leave, you come back whenever you want. Grids in progress stay saved. Through iCloud, your progress follows you across your devices without you doing a thing.

WHY IT EXISTS

When we started building apps at BLA, we wanted to practice logic before diving into bigger projects. Sudoku became an exercise in design and code at the same time. It was the first app BLA published.

Sudoku BLA is an app developed in Goiânia by BLA Publicações e Conteúdo Digital, an independent editorial studio led by Ivan Grycuk. BLA is a content powerhouse built over twenty years of experience in marketing, branding, and storytelling.