How to play two-star Star Battle
Place exactly two stars in every row, every column and every colour region. Stars must never touch, including diagonally. Tap an empty cell once to mark a dot, again for a star, and again to clear it. Drag to mark several empty cells with dots. Use the Patterns button if colours are difficult to distinguish.
- Each of the ten rows needs two stars.
- Each of the ten columns needs two stars.
- Each outlined region needs two stars. Colours and optional textures identify the same groups.
- Leave at least one cell between stars in every direction. Two stars may share a row, column or region as long as they do not touch.
A solved 10×10 board contains 20 stars. A red conflict means stars touch or a row, column or region has more than two stars. Having fewer than two is an unfinished unit, not necessarily a mistake.
Start with pairs and compare units
- Finished units: when a row, column or region has two stars, dot its remaining cells.
- No-touch zones: dot all cells next to a known star, including diagonal neighbours.
- Possible pairs: in a small region, consider all ways to fit two non-touching stars. A cell in every remaining pair must be a star; one in no pair must be empty.
- Compare rows, columns and regions: a possible pair must agree with the possible pairs in every other unit. Eliminate pairs that would force touching stars or disagree on a shared cell, then repeat the simpler deductions.
Star Battle and Two Not Touch
Two Not Touch uses this two-star rule set. Solvedle offers its own original practice puzzles. If you want the one-star variant used by Queens-style games, choose one-star practice; its rules and records are separate.
Original puzzles, separate practice records
The initial library contains 40 original 10×10 puzzles. Every puzzle has one verified solution and a complete logical solution; guessing is not required. These classic boards can involve advanced deductions; the Classic label is a rule set, not a measured difficulty rating.
Press New for another board. Unsolved puzzles are offered first; once the library is exhausted, puzzles can be replayed. Copy the current URL to share the same starting board. Your progress and best times stay in this browser. Two-star practice does not change the daily trio, streak or daily completion rankings.
Try Takuzu / Binairo for a different logic puzzle, or return to today’s trio.