Star BattleFree, no sign-up
Place stars in the colored regions. The puzzle changes at midnight Japan time (UTC+9) and is the same for everyone on the same day and size. Every puzzle has a unique solution.
🎉 Solved!
Random practice runs are not added to the leaderboard.
FAQ
What are the rules of Star Battle?
The board is split by bold lines into N regions. Place the required number of stars (1 on 5×5 and 8×8, 2 on 10×10) in every row, every column and every region. Stars may not be next to each other in any direction, including diagonally.
Any solving tips?
Start with small regions and regions that fit inside a single row or column. For example, if a region lies entirely within one row, that row's star must be in that region, so no other cell in the row can hold a star. Mark the cells you've ruled out with a dot (·) to keep track.
Does every puzzle have only one solution?
Yes. Every puzzle is built to have a unique solution (each time the regions are drawn, we check that only one solution exists). You never need to guess — logic alone is enough.
How is the leaderboard ranked?
By the time from opening the puzzle to placing every star correctly, fastest first. You only need a nickname, and you can submit up to 30 times a day per size. The server checks that your stars follow the rules.