Shapedoku Guides
Everything you need to get more out of Shapedoku, the shape-based Sudoku you can play free in your browser. These guides cover the difficulties and the gentle Beginner tutorial, the Daily Challenge and streaks, challenge modes like Speed, No Mistakes and Perfect Run, pencil Notes with smart cleanup, hints that explain why a shape fits, XP, levels and rank titles, and how to play offline or across devices.
Shapedoku keeps the exact rules of classic Sudoku and swaps the numbers 1 to 9 for nine glowing shapes, which makes a busy board easier to scan and friendlier to colorblind players. Everything here is honest and practical, meant to help you play better rather than to sell you anything.
35 articles in this collection
Does Shapedoku Need an Account? Guest Play Explained
Wondering about Shapedoku with no account? You can play as a guest, save offline, and sign in only if you want to sync. Here is how it works.
Shapedoku Printable Puzzles: A Screen Free Guide
Shapedoku printable puzzles bring shape based Sudoku off the screen and onto paper. Learn how to print, choose difficulty, and enjoy offline solving.
Shapedoku Faster: Tips to Speed Up Your Solves
Want to solve Shapedoku faster? Scan shapes in rows and boxes, use notes and the free hint wisely, and test yourself against the Speed countdown.
Shapedoku Accessibility Overview for Every Kind of Player
A Shapedoku accessibility overview covering shape-plus-color coding, large tap targets, Undo, offline play, and no forced login for all players.
Shapedoku Extreme Mode: Solve It With Pure Logic
Shapedoku extreme mode is the hardest tier, and it never needs a guess. Use full Notes, careful chains and patient scanning to crack every valid puzzle.
Shapedoku Colorblind Design: Shapes and Color
Shapedoku colorblind support codes every token by shape and color, so all nine pieces stay distinct. See why that helps and how to read each shape.
How to Install Shapedoku on Your Phone or as a Web App
Learn how to install Shapedoku from Google Play or add the web app to your home screen as a PWA. Simple steps for phone, tablet, and desktop.
Shapedoku Solver: Learn From It, Do Not Cheat
The Shapedoku solver on shapedoku.com is a free learning tool, not a cheat. Learn how to use it to check work, find your mistake, and understand each move.
Shapedoku Rank Titles: From Beginner to Legend
Shapedoku rank titles track your journey from Beginner to Shapedoku Legend as XP and levels climb. Here is how ranks, XP and levels fit together.
Shapedoku No Mistakes Mode: Tips to Survive
Shapedoku no mistakes mode ends the run at a single wrong shape. Use notes, scan carefully, and take the free hint to survive a flawless solve.
Shapedoku Settings Guide to Sound, Haptics, and Notes
The Shapedoku settings let you tune sound, haptics, animations, and auto-clean notes. Here is what each toggle does and how to set them.
Shapedoku Reading Shapes: See All Nine at a Glance
Shapedoku reading shapes is a scanning skill: learn to recognize the nine glowing shapes instantly by silhouette and color so you solve faster and cleaner.
First Week Shapedoku Plan: A Gentle 7-Day Start
Your first week Shapedoku plan eases you from the Beginner tutorial to the Daily Challenge and Hard puzzles across seven gentle, confidence-building days.
Play Shapedoku Without an Account: What Guest Play Is Good For
Learn how to play Shapedoku without an account, start instantly in the browser, use core puzzle features, and decide when simple guest play suits you best.
How to Play Shapedoku Offline: A Simple Guide for Travel and Low-Signal Days
Learn how to play Shapedoku offline, what offline play is useful for, and how locally saved progress keeps Sudoku ready when your connection disappears.
Shapedoku Leaderboards Guide: Compete Without Losing Your Solving Rhythm
Use this Shapedoku leaderboards guide to build cleaner speed habits, compare competitive modes, and improve times without turning every puzzle into a rush.
Shapedoku Perfect Run: No Mistakes, No Hints, No Net
The Shapedoku perfect run mode asks for a flawless solve: no mistakes, no hints, no extra life. Here is how to prepare and beat it with pure logic.
Shapedoku Continue Game: Autosave and Offline Play
Shapedoku continue game and autosave keep your board locally, so you can close the app, return later, and resume the same puzzle offline any time.
Shapedoku Web vs App: Which Way Should You Play?
Shapedoku web vs app: the browser and Android versions share the same puzzles, sync and features. Here is what is identical and the few things that differ.
Shapedoku Notes Mode and Smart Notes Cleanup Guide
Shapedoku notes mode lets you pencil in candidate shapes, and Smart Notes Cleanup removes a note once you place that shape in its row, column, or box.
How Shapedoku Scoring Works, Point by Point
Shapedoku scoring starts from a base by difficulty, then subtracts time, mistakes, hints, and extra-life penalties. See how your final score forms.
Shapedoku Hints: The Free Hint That Teaches You Why
Shapedoku hints give you a free first hint that explains why a shape fits, plus an optional rewarded second hint. Learn when each one is worth using.
Shapedoku Sync: Carry Your Progress Across Devices
Shapedoku sync lets you start as a guest and optionally sign in with Google or email to carry your XP, stats and streak across every device you play on.
Shapedoku Mistakes: Three Lives in Classic Mode
Shapedoku mistakes are capped at three in Classic before game over. See how the counter works and how a rewarded ad can grant one extra life.
Shapedoku Speed Mode: Solve Before Time Runs Out
Shapedoku speed mode puts a countdown on your solve. Learn the fast-scanning habits that finish the grid in time, and why you should never guess.
Shapedoku Undo and the Clear Tool Explained
Shapedoku undo steps the board back one move, while the Clear tool empties a cell. Learn how each works, what they never refund, and when to use them.
Shapedoku Keyboard Shortcuts: Play Faster in Your Browser
Shapedoku keyboard shortcuts let web players place shapes, toggle notes, take a hint, and clear cells fast. Learn every shortcut and how to use them.
Shapedoku Smart Notes: Keep Your Pencil Marks Tidy
Shapedoku smart notes clean themselves up as you solve, removing stale pencil marks from each row, column and box so the board stays clear.
Shapedoku for Kids and Why Shapes Make Sudoku Easier
Shapedoku for kids uses friendly shapes and a gentle Beginner tier to teach Sudoku logic. Here is why it suits children learning to solve puzzles.
Shapedoku Beginner Mode: Learn Shape Sudoku Gently
Shapedoku beginner mode is a gentle practice tier with extra starting shapes and a guided tutorial that explains why each shape fits, one calm step at a time.
How XP and Levels Work in Shapedoku
Shapedoku XP rewards every puzzle you finish, adding up into levels and titles. Here is how progression works and the habits that help you climb faster.
Shapedoku vs Classic Sudoku
Shapedoku vs Sudoku: identical rules, different symbols. How swapping numbers for glowing shapes changes the feel of the board, and what stays the same.
Meet the Nine Shapedoku Symbols
A guide to the nine Shapedoku symbols, from triangle and hexagon to crescent moon and lotus, with a simple trick to recognize each one at a glance.
How to Play Shapedoku: A Simple Guide for Beginners
How to play shapedoku in a couple of minutes: fill the grid with nine glowing shapes so each row, column, and box holds every shape exactly once.
A Guide to the Shapedoku Daily Challenge
A guide to the Shapedoku Daily Challenge: one fresh puzzle a day, a shared board for everyone and a streak to protect. How it works and how to keep it.