Sudoku Minimalist

A clean, elegant Sudoku puzzle game with dark/light themes and smooth animations.

Features

Daily Challenge

• Same puzzle for everyone each day
• Daily streak tracking - maintain your streak by playing every day
• Completion status - see when you've already finished today's puzzle
• Medium difficulty for consistent challenge

Game Modes

• Easy: 35 cells removed - great for beginners
• Medium: 45 cells removed - balanced challenge
• Hard: 52 cells removed - for experienced players
• Expert: 58 cells removed - ultimate difficulty

Gameplay

• Tap to Select: Tap any cell to select it
• Number Pad: Enter numbers 1-9 to fill cells
• Notes Mode: Toggle pencil marks for possible candidates
• Hints: 3 hints per game to reveal correct numbers
• Erase: Clear a cell's value or notes
• Undo: Revert your last move (up to 20 moves)
• Auto-Highlight: Related cells highlight when you select

Smart Features

• Error Detection: Wrong numbers show in red
• 3 Mistakes Limit: Game ends after 3 errors
• Number Tracking: Numbers fade when all 9 are placed
• Auto-Note Removal: Notes clear when number is placed
• Timer: Track your solve time
• Pause: Hide the board and pause the timer

Visual Polish

• Victory Confetti: Celebration animation on puzzle completion
• Trophy Animation: Bouncing trophy icon on win
• Shake Effect: Screen shake on game over
• Animated Pause: Pulsing play button to resume
• Dark/Light Themes: Toggle between themes

Statistics

• Games won
• Best time per difficulty
• Current win streak
• Daily challenge streak

App Structure

src/
  app/
    _layout.tsx    # Root layout with fonts
    index.tsx      # Home screen with daily challenge & difficulty selection
    game.tsx       # Sudoku game board and controls
  lib/
    sudokuStore.ts # Zustand store with puzzle generation & daily challenge
    themeStore.ts  # Theme state management

Tech Stack

• Expo SDK 53 with React Native
• Expo Router for navigation
• Zustand for state management
• React Native Reanimated for animations
• Expo Haptics for tactile feedback
• Rajdhani font for clean typography

Color Palette

• Indigo: #6366F1 (primary, selection)
• Light Indigo: #818CF8 (user input)
• Green: #4ADE80 (success/easy)
• Blue: #60A5FA (medium)
• Amber: #F59E0B (hard/hints)
• Red: #EF4444 (errors/expert)
• Background Dark: #0A0A0F
• Background Light: #F8FAFC