Sudoku Up is a desktop Sudoku collection that generates numbered nine-by-nine puzzles, records separate player results, and prints grids for solving away from the computer. Each puzzle still follows the ordinary rule: every row, column, and three-by-three box must contain the digits one through nine without repetition. Sudoku Up adds a Game Number to the shuffled starting layout, so entering the same number brings back the same puzzle instead of merely choosing another puzzle at the same difficulty.
Choose a numbered grid
Five difficulty settings separate easier placements from grids that need longer chains of elimination. The Game Number is useful when two people want to solve an identical layout or when a player wants to restart a particular attempt. Difficulty and game number identify the puzzle more precisely than a saved screenshot.
The unactivated installation sharply limits this system. It exposes one predefined, unchangeable game number for each game type. Entering an activation code opens the larger numbered collection. Reinstalling the trial does not create a separate registered build; the same installation needs its activation code again.
Work with candidates
Pencil marks place possible digits inside an empty cell without committing an answer. Auto Pencil Marks can fill every empty cell with the digits that are theoretically legal at that moment. The Show Cells with A command then marks cells containing a chosen number or candidate, which helps trace repeated possibilities across the grid.
Automatic candidates reflect current legal placements, not the reasoning needed to finish the puzzle. A digit can remain legal in several cells even when a longer deduction rules most of them out. Show Valid Moves also reveals legal actions, so players who want an unaided solve need to decide which assistance commands to leave unused.
Save the attempt
Sudoku Up can save an unfinished grid, reopen it, or restart the same puzzle. Undo and redo preserve a trail of changes during a session. These controls differ from selecting a new Game Number: restarting clears progress on the current layout, while another number creates a different starting arrangement.
Player names keep scores and outcomes apart. The statistics cover won, lost, and skipped games, session totals, winning sequences, high scores, and other result groups. Charts make those records easier to compare, but the score combines more than elapsed time. A fast solve and a high-scoring solve are therefore not always identical.
Share player records
Windows accounts receive separate configuration and statistics storage by default. A family that expects one common leaderboard must change the Store Folder under the advanced options. The chosen folder needs read and write permission for every participating account.
That shared folder does not become an automatic backup. Sudoku Up keeps its records as files in the Store Folder. Preserving them requires finding that location and copying the files to separate storage. Moving the program to another computer also needs a normal installation, activation, and a separate transfer of those saved records.
Print with context
Sudoku Up can print the current puzzle, a range selected by number or difficulty, and solution pages. A printed grid no longer has interactive pencil marks, validation, undo, or a running timer. Include the Game Number and difficulty when the paper copy may need to be reconstructed later.
