Culmgrid: Sudoku Grove

Classic 9x9 sudoku in a calm bamboo grove: tap a cell, place a number, solve.

Step into a quiet bamboo grove and clear your mind one number at a time. Culmgrid is a classic 9x9 sudoku with painted backdrops, five difficulty levels, a fresh daily puzzle and step-by-step hints that teach you how to solve, not just what to write.

How To Play

1. Tap an empty cell. Its row, column and 3x3 block light up, along with every matching number.
2. Tap a number from 1 to 9 to place it. Switch on Pencil to jot small candidate notes instead.
3. Fill the whole grid so every row, column and block holds 1 to 9 exactly once.

A wrong number turns the cell red and adds a mistake. There is no game over: mistakes only lower your score, so you can always finish the puzzle you started.

Features

• Five difficulty levels, from Easy to Master, with a unique solution in every puzzle
• Undo, Redo, Erase and Reset whenever you need a fresh start
• Pencil notes for candidates
• Number keys fade out once all nine of a digit are placed
• Teaching hints: each hint names the technique (Last Free Cell, Naked Single, Hidden Single), highlights the cells that prove it and walks you through with Back and Next before placing the number
• Daily puzzle with a monthly calendar that marks every day you solved
• Points for every win: a base score for the difficulty, a time bonus, minus mistakes
• Total points and a player level that grows with each solved grid
• Stats for each difficulty: best time, average time and games played
• Four painted backdrops: Day Grove, Dusk Grove, Night Falls and Stone
• Three grid styles (Paper, Ink, Sage) and two number sizes
• Your game saves automatically, so you can close the app and continue later

Progression

Every solved puzzle adds points to your total. Every 1,000 points raises your level. Beat your best time on each difficulty, keep your daily calendar filled and move up from Easy to Master as your logic sharpens.

Play Anywhere

Culmgrid works fully offline. No account, no sign-in, no internet connection needed. Your progress stays on your device, and you can reset it at any time from Settings.

Take a breath, pick a difficulty and solve your first grid in the grove today.

The app

Platform

Android · com.matthewyoung.culmgrid