Press kit

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Fact sheet

Name: Box Brain Sudoku
Developer: Superserve
Platforms: iPhone, iPad and iPhone Duo. Android is coming later.
Price: Free, with a small banner ad. Pro is a one-time purchase of $9.99: no subscription.
Languages: English, Spanish, Portuguese, German, French, Italian, Japanese and Korean
Modes: Classic, Killer, Jigsaw, Thermo, Arrow, Sandwich, Kropki, Greater Than, Diagonal, Hyper, Anti-Knight and Even-Odd
Website: boxbrainsudoku.com
App Store: apps.apple.com/app/id6830467300
Contact: [email protected]

In one line

Twelve kinds of sudoku in one calm app, with hints that teach you the technique instead of just giving you the answer.

In a paragraph

Box Brain Sudoku puts twelve kinds of sudoku in one app: Classic, plus Killer, Jigsaw, Thermo, Arrow, Sandwich, Kropki, Greater Than, Diagonal, Hyper, Anti-Knight and Even-Odd. Every puzzle has one solution and can be solved by logic alone. Its hints work like a teacher: first a nudge towards where to look, then the technique by name and why the move works. Lessons cover eighteen techniques, from hidden singles to swordfish. There are two daily puzzles, a weekly Expert challenge, twenty skins, full VoiceOver support and free braille sheets for embossers and swell paper. There is no account and no energy system, and progress stays on the player's own devices.

What makes it different

Hints that teach: a nudge first, then the technique and the reason, the way a friend would explain it.
Honest difficulty: Easy to Expert are rated by the techniques a puzzle needs, not by how many cells are blank.
Made for everyone: every cell reads its clues to VoiceOver, there are one-tap setups for low vision and colour blindness, and braille sheets are free.
Fair: no account, no energy, no full-screen ads, and Pro is bought once.