Sudoku4Adults Launches Version 2.7

Visual logic, your way.
Players can now colour individual cells to mark patterns, track candidate relationships, or visually group logic chains. This is a powerful technique used by advanced solvers to reduce mental load and spot deductions faster, now built directly into the game.

Perfect for:

• Advanced solving techniques
• Visual learners
• Complex puzzles where clarity matters

Let the game handle the basics, you focus on logic.
Auto Pencil automatically fills in valid candidate numbers for each cell, updating dynamically as the puzzle progresses. This saves time, reduces errors, and allows players to concentrate on strategy rather than manual bookkeeping.

Ideal for both:

• Learning players building confidence
• Experienced solvers tackling harder grids

Designed for night play and eye comfort.
Dark Mode dims the interface and softens the puzzle background, significantly reducing eye strain during evening or low-light play. The result is a calmer, more immersive Sudoku experience, perfect for winding down while keeping your brain active.

Cleaner interface. Smarter focus.
Once all nine instances of a number are placed on the grid, that number is automatically hidden from the number pad. This reduces visual clutter and helps players concentrate only on what still matters.

A small change, with a big impact on flow and focus.

Every puzzle, uniquely identified.
Each Sudoku now displays its Puzzle ID, making it easier to:

• Track favourites
• Share specific puzzles
• Reference completed challenges

This is especially useful for competitive players and returning users who want consistency and traceability.

Know your puzzle’s true difficulty.
Version 2.7 now shows the Sudoku Explainer (SE) Rating, a respected metric used by advanced solvers to measure puzzle complexity based on the logic required, not guesswork.

This gives players a far more accurate understanding of difficulty than labels like “Easy” or “Hard” alone.

See what logic the puzzle demands.
Players can now view the hardest solving technique required to complete each puzzle. This is a major upgrade for anyone looking to:

• Improve their Sudoku skills
• Learn advanced techniques
• Choose puzzles aligned with their ability level

It transforms every puzzle into a learning opportunity.