Sudoku: Vxp

Sudoku Vxp implements a "Cursor" model:

| Aspect | Sudoku Vxp | Modern Sudoku (Android/iOS) | |--------|------------|-----------------------------| | Input | Physical keypad | Touch screen | | Graphics | Simple grid | Animations, themes | | Hint system | Basic (no smart hints) | AI hints, cell highlighting | | Puzzle source | Preloaded set | Daily online puzzles | | Memory | Very limited | Hundreds of MB available |

Generating a puzzle from scratch on a low-CPU device can be time-consuming. Sudoku Vxp utilizes a Seed and Shuffle method: Sudoku Vxp

  • Digging Holes: To create the puzzle, numbers are removed. To ensure a unique solution, a fast solver is run after each removal to verify that the solution remains unique.

    • This method reduces generation time from seconds (backtracking generation) to milliseconds.

    Step 1: Enable Unknown Sources

    Step 2: Download the Sudoku Vxp File

    Step 3: Transfer to Phone

    Step 4: Run the Installer

    Step 5: Launch and Play

    | Feature | Description | |---------|-------------| | Grid | 9×9 standard Sudoku grid | | Difficulty | Easy, Medium, Hard (sometimes Very Hard) | | Input | Keypad navigation (no touchscreen on many models) | | Cell selection | Arrow keys to move, number keys 1–9 to fill | | Pencil marks | Small candidate numbers allowed | | Error check | Highlights duplicates in row/column/box | | Timer | Optional time tracking per puzzle | | Save/Load | Resume last unfinished game |

  • The exact Vxp instance will specify which of these hold.
  • Navigation:
  • Call/End keys: Menu or exit