Win 10 Medium puzzles and a little gift appears: 3 free Hard boards, on us. The big 10×10, deeper deductions, no strings attached. Plus a fresh coat of polish throughout.

Bug fixes. PREVIOUS RELEASE KAKU 1.5: SEE HOW A ROUND WAS SOLVED See how a round was solved - Every round played from now on is saved, so it can be watched back later. - Watch a round you solved play back move by move. Your own runs are always free. - Replay a friend's round, or follow their board live while they are still solving it. - Play every board of a round side by side and see who was ahead at any moment, and when each of you crossed the line. A calmer board - A 1 can only ever be its own square, so the board arrives with them already drawn. Nothing to work out, and nothing to tap. - Switch it on in Settings and a number steps back once it has an area of its own, so the ones still to go stand out. - Give up on a level and the board solves itself in front of you. The squares you got right stay put, so you can see exactly what you missed. A new way to compete - Every level now ranks your average time too, not just your single best run. - Flawless Expert can be earned again: an Expert with no help, and nothing redrawn. - Squashed bugs and polished things across the app.

Bug fixes. PREVIOUS RELEASE KAKU 1.5: SEE HOW A ROUND WAS SOLVED See how a round was solved - Every round played from now on is saved, so it can be watched back later. - Watch a round you solved play back move by move. Your own runs are always free. - Replay a friend's round, or follow their board live while they are still solving it. - Play every board of a round side by side and see who was ahead at any moment, and when each of you crossed the line. A calmer board - A 1 can only ever be its own square, so the board arrives with them already drawn. Nothing to work out, and nothing to tap. - Switch it on in Settings and a number steps back once it has an area of its own, so the ones still to go stand out. - Give up on a level and the board solves itself in front of you. The squares you got right stay put, so you can see exactly what you missed. A new way to compete - Every level now ranks your average time too, not just your single best run. - Flawless Expert can be earned again: an Expert with no help, and nothing redrawn. - Squashed bugs and polished things across the app.

Bug fixes. PREVIOUS RELEASE KAKU 1.5: SEE HOW A ROUND WAS SOLVED See how a round was solved - Every round played from now on is saved, so it can be watched back later. - Watch a round you solved play back move by move. Your own runs are always free. - Replay a friend's round, or follow their board live while they are still solving it. - Play every board of a round side by side and see who was ahead at any moment, and when each of you crossed the line. A calmer board - A 1 can only ever be its own square, so the board arrives with them already drawn. Nothing to work out, and nothing to tap. - Switch it on in Settings and a number steps back once it has an area of its own, so the ones still to go stand out. - Give up on a level and the board solves itself in front of you. The squares you got right stay put, so you can see exactly what you missed. A new way to compete - Every level now ranks your average time too, not just your single best run. - Flawless Expert can be earned again: an Expert with no help, and nothing redrawn. - Squashed bugs and polished things across the app.

KAKU 1.5: SEE HOW A ROUND WAS SOLVED See how a round was solved - Every round played from now on is saved, so it can be watched back later. - Watch a round you solved play back move by move. Your own runs are always free. - Replay a friend's round, or follow their board live while they are still solving it. - Play every board of a round side by side and see who was ahead at any moment, and when each of you crossed the line. A calmer board - A 1 can only ever be its own square, so the board arrives with them already drawn. Nothing to work out, and nothing to tap. - Switch it on in Settings and a number steps back once it has an area of its own, so the ones still to go stand out. - Give up on a level and the board solves itself in front of you. The squares you got right stay put, so you can see exactly what you missed. A new way to compete - Every level now ranks your average time too, not just your single best run. - Flawless Expert can be earned again: an Expert with no help, and nothing redrawn. - Squashed bugs and polished things across the app.

Internal stability improvements. PREVIOUS RELEASE KAKU 1.4: CHAT IN VERSUS Chat in every match - Talk to your rival right inside the match, before, during and long after it ends. - Reply to any message or round result, and tap back with a quick reaction. - Get a push when a friend writes, and see unread matches right on Home. Versus, clearer than ever - Every match is now one flexible kind: play your turns whenever you like, or together for a live race. - No spoilers: a rival's time on a round you have not solved yet stays hidden until you play it. - A live "playing now" lights up when a friend is on a round. - Nudge a friend who forgot: send a friendly reminder that it is their turn. Know your game - New charts show your solve times over time and by difficulty. - Levels, challenges and match rounds now count toward your stats. - Bug fixes and polish across the app.

KAKU 1.4: CHAT IN VERSUS Chat in every match - Talk to your rival right inside the match, before, during and long after it ends. - Reply to any message or round result, and tap back with a quick reaction. - Get a push when a friend writes, and see unread matches right on Home. Versus, clearer than ever - Every match is now one flexible kind: play your turns whenever you like, or together for a live race. - No spoilers: a rival's time on a round you have not solved yet stays hidden until you play it. - A live "playing now" lights up when a friend is on a round. - Nudge a friend who forgot: send a friendly reminder that it is their turn. Know your game - New charts show your solve times over time and by difficulty. - Levels, challenges and match rounds now count toward your stats. - Bug fixes and polish across the app.

Bug fixes. The Total Solved leaderboard now updates for everyone, so players who were missing from it show up with their correct total. PREVIOUS RELEASE KAKU 1.3: THE STAMP ALBUM Collect your Dailies - Every Daily you solve becomes a collectible stamp in a monthly album page. Your whole history is already in there. - Finish in the day's top three and your stamp is minted in gold, silver or bronze foil. - Solve the Daily on its day, or its slot stays empty for good. Versus, at your own pace - Own-pace matches rebuilt: play your rounds whenever you like, nobody waits on anybody. - Friends can join an own-pace match with the code, even after it has started. A fresh look, and more - Seven brand new app icons, one per theme, following whichever theme you pick. - See your streak in a week strip and a full calendar. - Compare after a hint: tap the bulb to see what you had before. - Optionally protect placed squares from being overwritten. - Bug fixes and polish across the app.

Bug fixes. The Total Solved leaderboard now updates for everyone, so players who were missing from it show up with their correct total. PREVIOUS RELEASE KAKU 1.3: THE STAMP ALBUM Collect your Dailies - Every Daily you solve becomes a collectible stamp in a monthly album page. Your whole history is already in there. - Finish in the day's top three and your stamp is minted in gold, silver or bronze foil. - Solve the Daily on its day, or its slot stays empty for good. Versus, at your own pace - Own-pace matches rebuilt: play your rounds whenever you like, nobody waits on anybody. - Friends can join an own-pace match with the code, even after it has started. A fresh look, and more - Seven brand new app icons, one per theme, following whichever theme you pick. - See your streak in a week strip and a full calendar. - Compare after a hint: tap the bulb to see what you had before. - Optionally protect placed squares from being overwritten. - Bug fixes and polish across the app.

KAKU 1.3: THE STAMP ALBUM Collect your Dailies - Every Daily you solve becomes a collectible stamp in a monthly album page. Your whole history is already in there. - Finish in the day's top three and your stamp is minted in gold, silver or bronze foil. - Solve the Daily on its day, or its slot stays empty for good. Versus, at your own pace - Own-pace matches rebuilt: play your rounds whenever you like, nobody waits on anybody. - Friends can join an own-pace match with the code, even after it has started. A fresh look, and more - Seven brand new app icons, one per theme, following whichever theme you pick. - See your streak in a week strip and a full calendar. - Compare after a hint: tap the bulb to see what you had before. - Optionally protect placed squares from being overwritten. - Bug fixes and polish across the app.

Playing with friends is finally here. Challenge a rival, race live, and settle every score. • Challenge your friends: send a beat-my-time link and build a head-to-head record against each rival. • Live matches: race friends round by round with a shared code, or take your turns at your own pace. • Match alerts: get a heads-up when a friend invites you or it's your turn to play. • Your solved Dailies now count toward your tier and total solve leaderboards. • Tap your daily reminder to jump straight into today's puzzle. • A more polished interface throughout, with smoother animations and a cleaner match screen. • Plus lots of bug fixes and improvements.

• Hints now cost time. Each hint adds to your clock, so the Assisted leaderboards stay a fair race. • The Daily now allows up to 2 hints. • New Total leaderboard: see your all-time total of solved puzzles ranked against everyone. • Smoother gameplay: drawing on the board is faster and more responsive.

• Show off your solved board with a new shareable image. • New in-app Leaderboards: a clean summary plus full rankings for the daily puzzle, every level, and your longest streak. • Browse the top players with medals and photos, and jump straight to your own position. • Rankings open instantly and load more as you scroll, and you can open them right after a win. • Larger text sizes are fully supported now, so nothing gets cut off. • More reliable daily score submissions, always counted on the right day. • Plus assorted fixes and polish.

New • Challenge a friend: share any puzzle you solve, today's Daily or a random board, as a "beat my time" link and race head to head. • Auto-finish the easy bits: once you've solved everything else, let Kaku fill in the forced single cells for you, with a small, fair time penalty. • Pause and resume any puzzle without losing your time. • New, more vibrant board themes that recolor the whole game. Improved • A more rewarding solve, with a victory wave across the board, times that count up, and a calm board intro. • Calmer by design: no more mistake counter or losing, just reason it out at your own pace. • Clearer hints: a revealed square is now marked and locked, so you always know what came from a hint. • More control in Settings: turn the win confetti on or off, and every option now explains itself. Fixed • The Puzzle of the Day now rolls over at a consistent time for everyone.