Square or Circle vs Windoku. Hyper Sudoku.

"Square or Circle" is a mini game which trains pattern recognition, it can improve your brain capacity. "Square or Circle" requires you to look at the displayed image and tell whether it contains a square or a circle, you can challenge it in 9 different game modes. If you feel recognizing between square and circle is too easy, you should start trying other game modes, some of the modes are a lot harder than square and circle. Within a short period of time of playing, most people realise their improvement in pattern recognition skills, and found Square and Circle mode too easy, then it's time to challenge other modes. Brain capacity would take longer to train than pattern recognition, but given time, improvement will be noticeable. Apart from this, pattern recognition may allow us to find a solution to a persistent and seemingly abstract problem or to write a computer program. "Square or Circle" will improve your brain capacity over time. Game modes: Square and Circle: Choose between square or circle on every level Any Shapes: Different shapes might be used on every level Only Half Letters: Only half of the shapes appears in the image Up Side Down: The shapes you need to recognize will appear in upside down position as oppose to upright position Flashing: The image keep flashing which can make it easier to recognize the shapes (or not) Rotations: The shapes you need to recognize would rotate in any angle makes it harder to recognize Time Attack: You're given a minute to see how far you can go in the game 3, 2, 1, Gone!: The image will appears for 3 seconds before it disappear for good, focus is key here Chicken, Chicken!: bawbwaaak! If you like Square or Circle, please support us by giving us a rating on the store. Thanks for your support!

Windoku is Hyper Sudoku — classic 9x9 Sudoku elevated by four shaded window regions that transform how you solve every puzzle. The four coloured windows are placed symmetrically inside the grid, each a 3x3 region that must also contain digits 1-9 without repetition. That gives you 13 constraint regions instead of the standard 9 — and it changes everything. Cells inside a window carry extra logical weight, the windows overlap with standard boxes and lines in ways that unlock powerful deductions, and the coloured grid is simply beautiful to look at. If you love Sudoku and want something visually fresh and logically richer, Windoku is for you. FOUR SHADED WINDOWS • 4 extra 3x3 regions placed symmetrically inside the grid • 13 total constraint regions — 9 standard plus 4 windows • Windows overlap rows, columns, and boxes — creating uniquely powerful logic • Also known as Hyper Sudoku, Window Sudoku, and NRC Sudoku SIX DIFFICULTY LEVELS • Easy: The windows guide you with extra constraints — perfect for newcomers • Medium: A satisfying daily challenge for regular solvers • Hard: Window logic becomes essential — not just helpful • Expert: Advanced techniques required across all 13 regions • Pro: Push your limits with multi-region elimination chains • Master: The ultimate test for dedicated puzzle solvers DAILY CHALLENGES • A fresh Windoku puzzle every single day • Build your streak and track progress on the calendar • Compete on global leaderboards and see how you rank worldwide TECHNIQUE LIBRARY • Learn the solving techniques that make window logic click • Interactive tutorials with real puzzle examples • Smart hints that explain the reasoning, not just the answer • Campaign mode with progressive levels from beginner to master ELEGANT DESIGN • Coloured windows make the grid immediately eye-catching • Clean, distraction-free interface lets you focus on solving • Twelve beautiful color themes with light and dark variants • Smooth animations and responsive native feel • Dark mode for comfortable late-night sessions SMART TOOLS • Pencil marks and inline candidates for noting possibilities • Unlimited undo and redo — experiment freely • Error highlighting to catch mistakes early • Auto-save so you never lose your progress • Highlight matching numbers to spot patterns instantly PLAY YOUR WAY • Works completely offline — play anywhere, anytime • No account required to start playing • Free to play with no paywalls blocking content • Cloud sync keeps your progress safe across devices WHY WINDOKU Windoku takes the logic you already love about Sudoku and adds a visual layer that changes how you think. The windows are not just decoration — they are powerful constraints that make hard puzzles solvable and easy puzzles richer. Once you play Windoku, standard Sudoku feels like it is missing something. Download free and discover what four extra windows can do. Terms of Use: https://www.locksmithcreativemilan.com/windoku/legal/terms-of-service.html