Dark Mode, Daily Streaks & a Refreshed Design

We've been busy — here's what's new on OnSudoku.

Dark Mode & Light Mode

The site now supports dark and light themes. You can switch between them in the navigation menu — choose whichever is easier on your eyes.

Daily Streaks

Play at least one puzzle every day and build a streak. The longer your streak, the more points you earn per game:

• 2-day streak: +0.5% to your score
• 5-day streak: +2%
• 10-day streak: +4.5%
• 14+ days: up to +10%

Your current streak and best streak are shown on your profile. Miss a day and the streak resets — so keep it going!

Learn Sudoku Techniques

A new Learn section is now available in the navigation. It covers solving techniques with step-by-step explanations and examples — from beginner-friendly methods like Hidden Singles to Naked Pairs and beyond.

Auto-Start for Guests

Visiting the site for the first time? A new puzzle now starts automatically — no extra click needed.

Difficulty Cards on the Play Page

The puzzle selection page now shows difficulty levels as cards, making it easier to pick the challenge you're in the mood for.

Refreshed Design

The overall look and feel of the site has been updated — cleaner layout, improved navigation, and better consistency across all pages.

Fixes

• Score rounding on the result page is now more accurate
• Fixed input on iPad
• Fixed the game info panel display

If you run into any issues or have questions, feel free to reach out via the contact page.