Platinum Sudoku Java game
By JavagamesPublished · 2 min read
Platinum Sudoku Java game is most rewarding when you can explain why a number belongs in a cell. Start with a simple grid, use drafts for uncertainty and let speed come after accuracy.
Choose a puzzle that teaches you something
The game includes four difficulties, draft marks, hints and a solver. Sudoku X adds the two long diagonals to the usual row, column and box rules. Begin with ordinary Easy Sudoku so you can learn one set of rules at a time.
How to enter a number using the keypad
- Open Sudoku Game and choose Easy. The tutorial explains the grid and the available control methods.
- With the tutorial's select then input method, move using 2, 4, 6 and 8, press 5 to select the cell, then enter its number.
- Press # for a draft when more than one number remains possible. Press 0 to erase a value.
- Use * for a hint only after checking the cell's row, column and box yourself.
| Key | Action |
|---|---|
| 2 / 4 / 6 / 8 | Move the cursor in the tutorial's numeric navigation method. |
| 5 | Select a cell before entering a number in that method. |
| 0 | Erase the current cell. |
| # | Enter a draft. |
| * | Open available hints. |
What to do when a box has several blanks
List the box's missing numbers, then check where one of them is already present in the crossing rows and columns. If every blank except one is ruled out, you have a definite placement rather than a guess.
After placing it, inspect the crossing row and column again. That one answer can remove a possibility from several other cells.
Beginner mistakes to avoid
- Writing an uncertain number as a final answer instead of a draft.
- Using Sudoku X rules on an ordinary puzzle, or forgetting its diagonal rule when X is selected.
- Opening Solver when you wanted to keep solving the puzzle yourself.
A game to compare
Platinum Sudoku 2 adds a competitive world tour and extra puzzle activities. The first game is a clear place to learn careful placements without those extra distractions.
Final tip
Confirm one number at a time, mark uncertainty honestly and practise accuracy before chasing a faster finish.
Sources and edition notes
- Pocket Gamer: Platinum Sudoku Java review. 2006 Gameloft edition, difficulties, drafts, solver and Sudoku X.
- Platinum Sudoku original tutorial. text.dat confirms numeric navigation, three control methods, drafts, erase and hints.