The Coverlet journal

Good puzzles leave a little pattern behind.

Solving notes, game design stories, and gentle guides for finding the shape inside a board.

A better way in

Choose your kind of puzzle reading.

Learn the rectangle logicStart with area, edges, and certainty.Build a daily ritualMake room for a puzzle without pressure.Find a travel companionWhat makes an offline game worth keeping.

Browse by topic

Find your next doorway into Coverlet.

Logic puzzles and Shikaku strategyA practical Coverlet hub for logic puzzle rules, Shikaku strategies, comparisons, and no-guess solving guides.Offline iPhone games and travel-friendly puzzlesFind an offline iPhone game by comparing clear rules, flexible difficulty, privacy, readable touch controls, and lasting rewards.Logic puzzle techniques and game typesExplore puzzle techniques from rectangle and area deduction to connected regions, tiles, loops, patterns, and timed boards.Coverlet product and game designRead the design thinking behind Coverlet: private progress, readable puzzle techniques, offline play, and a quilt that keeps the solve.

Start with your intent

Looking for a particular kind of puzzle?

Logic puzzle gameCoverlet is a daily logic puzzle game for iPhone and iPad: solve rectangle and area clues, explore six techniques, and keep each finished board in a personal quilt.Offline puzzle gameCoverlet is an offline puzzle game for iPhone and iPad with on-device daily boards, clear logic, private core play, and a quilt that keeps completed solves.Daily puzzle gameCoverlet is a daily puzzle game for iPhone and iPad with three board sizes, six puzzle techniques, on-device generation, and a personal quilt for completed solves.Shikaku puzzleLearn the Shikaku rectangle logic puzzle: match each numbered clue to a rectangle with the right area, then practise the same idea in Coverlet Patchwork.

Coverlet Patchwork daily rectangle puzzle

How to play the rectangle logic behind Coverlet

Understand the one rule, then use simple deductions to make your first patch.

Read the guide →

Coverlet Stitchline puzzle technique

Six live puzzle techniques, two more in review

Six modes are live on the App Store; Cross-Stitch and Gingham are the latest additions in review.

Explore the techniques →

Coverlet puzzle boards showing different visual languages for logic deduction

Coverlet 2.1: two new puzzle techniques, and what they change

How Cross-Stitch and Gingham extend Coverlet's daily ritual without blurring what is live today.

Read the 2.1 guide →

لحاف ملوّن يتكوّن من ألغاز كوفِرْلِت المكتملة

كوفِرْلِت: دليل عربي لثمانية أساليب من ألغاز المنطق

دليل عربي واضح لأساليب كوفِرْلِت، مع تمييز ما هو متاح الآن عمّا هو قيد المراجعة.

اقرأ الدليل العربي →

Coverlet My Quilt screen filled with colorful completed blocks

Why every Coverlet solve becomes a quilt block

The small design idea that turns a daily game into a record of your year.

Read the story →

Coverlet Patchwork daily rectangle puzzle on an iPhone

Best offline puzzle games for iPhone and iPad

Clear rules, thoughtful difficulty, private play, and a reward that lasts beyond the solve.

Read the guide →

Coverlet Patchwork logic puzzle

Logic puzzle solving tips: start with certainty

Find forced moves, count consequences, and finish without guessing.

Learn the method →

Looking for the games themselves? Browse the Coverlet game shelf.

Coverlet on the App StoreFree daily puzzles