Sonar
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Weekly Top 10
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Play to set a score, then submit it to the board.
How to play
- Ping any cell (Enter or click) and it returns a single number: the distance to the nearest hidden target.
- That ping also clears every cell within that distance as proven empty.
- Where the distance rings from different pings intersect, a target must sit.
- Mark a cell you are sure of to capture it with no ping — deduction is worth more than brute pinging.
Strategy & tips
- A ping tells you the nearest target, not all of them. Read what its cleared area rules out, not just the number.
- Two or three pings from spread-out cells pin a target down faster than pinging next to it.
- Marking a correct cell pays more than a lucky direct hit — the game rewards knowing over guessing.
- You get three wrong marks before it is over, so only mark when the rings leave one answer.
- Fewer pings means a bigger par bonus at the finish. Solve it clean, not just solve it.
FAQ
Does the ping tell me every target?
No. It returns only the distance to the nearest still-hidden target, and clears that radius as empty. The rest you deduce.
Why mark instead of ping?
A correct mark scores more than a direct-hit ping, because deduction is the point. But a wrong mark costs a life.
How do I lose?
Three wrong marks ends the run. Only mark a cell when the distance rings leave no other option.
Does my best score save?
Yes. Your best is stored in your browser, and you can submit it to the weekly leaderboard.