One daily 10x10
A single expert board per day keeps the main challenge scarce and comparable.
Daily logic puzzle
Star Battle, one serious puzzle a day.
Place stars by deduction, not guessing. Play today’s 10x10 challenge, share your time, and climb Season 0 with real clears only.
Today's format
A fixed expert 10x10 board, refreshed daily.
The daily puzzle gives everyone the same target. The 1000-level archive stays as practice; the homepage pushes one shared challenge.
Built for repeat players
The product should feel like a daily brain ritual, not a generic mini-game directory.
No guessing required
The puzzle bank is generated around deductive motifs: locks, line claims, region claims, and subset chains.
Shareable moments
Clear the puzzle, beat a time, or ask friends for help with a card built for social sharing.