• Daily challenge day-rollover fix: if midnight passes while playing a daily puzzle, the game now expires gracefully instead of recording the result against the wrong day
• Wrong number feedback: the lose screen now shows what you placed vs. the correct number
• Improved number button sizing and touch accuracy to reduce fat-finger mis-taps

• Fixed orientation lock — screen no longer rotates when phone is turned
• Fixed intermittent missing grid divider lines
• Fixed text selection — long-press no longer highlights UI elements
• Master difficulty overhaul with advanced solving techniques

• Master difficulty overhaul: puzzles now require advanced solving techniques like naked pairs, X-Wings, and XY-Wings
• Daily challenge notification: detects new daily puzzle after midnight
• Fixed orientation lock — screen no longer rotates when phone is turned
• Fixed intermittent missing grid divider lines when switching games or resuming
• Fixed text selection — long-press no longer highlights UI elements

• Daily challenges with calendar tracking and completion summaries
• Fresh new look with vibrant, colorful artwork

• Pause & Switch: Tap the daily challenge notification to pause your current game and play the daily — your game resumes when you're done
• Calendar now shows three states: won (crown), lost (X), and missed (dash) for past days
• Give up or finish a daily challenge? You're returned to your paused game automatically
• Crash recovery improvements for paused games

• Bug fixes and performance improvements