Full logical explanations for Killer. • Hints show cage arithmetic, the rule of 45 and feasible combinations. • Expand the complete elimination chain to see what changed, where, and why one digit follows. • The place-digit button stays available while reading long explanations. • Answer reveals without a found logical move are clearly labelled.

Killer Easy now offers a smoother step up from Beginner, with a refreshed set of 250 puzzles. Auto-notes remove impossible candidates as the board changes, including cage sums in Killer. Rewarded hints unlock only after the video reward is confirmed, and Daily ranking messages are clearer. Improved save protection: damaged games are preserved instead of silently deleted, with recovery options if local data cannot be opened.

Meet Killer Sudoku: 1250 verified boards across five levels, including a gentler Beginner mode. Hints explain cage combinations and the rule of 45. A new home gives Classic and Killer equal space. Both modes now offer daily challenges, separate rankings, streaks and archives. Eight languages, rules for both modes, cage-aware auto-notes and practice after a free-play loss.

Refreshed App Store page. The game itself is unchanged: four daily boards, fair scoring and hints that explain the technique.

Fixed: the Easy, Hard and Expert daily leaderboards now accept scores - they were configured but never published to players, so results sat pending. Any past result already on your device will submit on its own. Also: a clearer message when a leaderboard genuinely isn't ready yet, instead of looking like a connection problem. And the app may occasionally ask for a rating after a daily win.

The daily challenge becomes four: every difficulty now gets its own board each day, with its own leaderboard. Play one or all of them - the streak counts any difficulty won on its day. A redesigned home screen puts today's actual board front and centre, with your rank and streak beside it. Plus a new app icon, undo, a proper win celebration, a breakdown of which techniques your board required, a home screen widget, an optional evening reminder, and a short welcome for new players.

A proper welcome: Sudoku Neo now opens with an animated launch screen - the grid draws itself in while the app gets ready. One small kindness: typing a digit on a cell you have already solved no longer counts as a mistake. A tap there could never change anything, so it is now simply ignored.

Sudoku Neo now speaks Japanese, German and Spanish - the full interface, including every hint explanation. Pick a language in Settings or follow the system. The store description was rewritten to say plainly what the game does: scores the shape of your solve, one shared daily board, hints that teach.

Past challenges. Every daily challenge since launch is now playable. Tap the calendar on the daily card and pick a day. The boards are the same ones everyone else played that day - they ship inside the app, so the archive works offline too. Archive results count towards your statistics, your best score and your best time. They do not go to the daily leaderboard and do not extend your streak: a streak means showing up on the day, so only the day itself counts for those. Also updated the advertising SDK.