Inkwell Sudoku: Classic Puzzle

Inkwell Sudoku is the classic 9×9 number puzzle, made the way it feels on paper: a thick cream card on a sunlit oak desk, crisp printed numbers, and your own numbers written in fountain-pen ink. A cup of coffee, a quiet room, a calm soundtrack. Big, clear numbers that are easy on the eyes.

HOW TO PLAY
• Fill every empty square with a number from 1 to 9
• Each row, each column and each 3×3 box must contain every number exactly once
• Tap a square, then a number; tap the same number again to erase it
• Turn on Notes (the pencil) to jot down candidates in small writing

FIVE DIFFICULTIES, EASY TO MASTER
Easy, Medium, Hard, Expert and Master. Difficulty comes from the hardest technique a puzzle needs, not from guesswork: singles for Easy and Medium, locked candidates and pairs for Hard, triples, X-Wing and XY-Wing for Expert, Swordfish and XYZ-Wing for Master. Thousands of puzzles at every level.

HINTS THAT TEACH
A hint shows the next logical step and names the technique, with the squares that matter highlighted, so you learn as you play. Every puzzle comes with three free hints. Made a mistake? The hint finds it first.

NO GAME OVER
Mistakes never end the game and there are no lives or energy. A wrong number simply turns red (or stays hidden, if you prefer) and lowers your score a little. Undo is free and unlimited.

FAIR BY DESIGN
Every puzzle was checked by computer before it reached you: exactly one solution, solvable step by step with logic alone. Tap "Verify" in "How is it fair?" and your phone counts the solutions again. The game never changes the difficulty behind your back.

THE DAILY PUZZLE
One puzzle for everyone each day: easiest on Monday, hardest on Saturday. Solve it to grow your streak, and solve it again for a better score.

A REASON TO COME BACK
• Three daily missions, easy, medium and hard, plus a bonus for finishing all three
• Three stars for a perfect solve, best times for every difficulty and detailed statistics
• Levels and XP
• Desks and inks that unlock as you play: Library, Garden Table, Rainy Window, Winter Cabin, Midnight Lamp; Jet Black, Burgundy, Emerald, Sepia, Violet, Teal, Antique Gold
• Halloween, October 23 – November 3: solve a puzzle and keep the Harvest Evening desk and the Pumpkin ink forever
• At most one reminder a day, and only if you want it

COMFORTABLE FOR EVERY PLAYER
Large numbers, highlighted rows, columns, boxes and matching numbers, auto-clearing notes, a "fill in all notes" option, handwritten or printed numbers, timer on or off. Plays offline, no Wi-Fi needed, in ten languages.

NO FORCED ADS
Ads play only when you choose one: three more hints, double XP after a solve, saving a broken streak, swapping a daily mission, or trying a desk or ink for 24 hours. No banners, no interstitials, no in-app purchases. Free to play.

A fresh page and a full pen. Your move.