Description

Clean grids and crisp controls make Sudoku Vault a satisfying trainer for both newcomers and seasoned solvers, offering 4×4, 6×6, and 9×9 boards that scale difficulty from gentle warm-ups to demanding logic paths. Play begins with the basics: fill each row, column, and region without repeating digits, using candidates to mark possibilities and the CHECK tool to prune mistakes and confirm progress once you’ve committed. Start easy by scanning for singles—cells where only one number fits—then apply elimination rules like “hidden singles” (a digit appears only once in a row’s candidate set) and “naked pairs” (two cells share the same pair, locking those values out elsewhere). As puzzles toughen, switch to line/box interactions to push numbers from a region into a row or column, and keep candidates tidy so patterns stand out. Use CHECK sparingly as a safety net after completing a technique, not as guess insurance, and avoid filling notes everywhere; smaller, targeted notes keep the board readable. When stalled, clear your head by toggling to a smaller grid size for a quick success before returning, or sweep the 9×9 board for near-complete lines where one deduction unlocks a chain. The joy comes from flow: every correct placement echoes through the grid, the interface stays out of your way, and the variety of sizes means you can match the puzzle to the time you have, making steady improvement feel natural rather than forced.

Instruction

Use a mouse or touchpad to select a cell then choose a number from the on-screen number pad to fill it in Use the Note button to toggle pencil marks and tap Check to validate your entries mdash incorrect numbers are removed and correct ones are lock

Specifications

• Easy to play