Board
Score 0Best 0Moves left 30Press a square to pick it, then press a neighbour to swap. A swap that lines nothing up snaps back and costs no move.
Keyboard: arrows move the cursor / Enter picks / arrows while picked swap
Swap two neighbouring marks to line up three or more in a row or column and they clear. Whatever is above falls into the gap, and if that lines up too it clears again. There is no clock — you get thirty moves and the score you can build with them.
Questions
Do I need an account?
No. Opening the page is the whole setup.
Where does the score go?
Into this browser on this device. Nothing is sent to a server, so it does not follow you elsewhere.
Is there a time limit?
No. Only moves are counted, and thinking costs nothing.
Does it work on a phone?
Yes. Press a square to pick it, then press a neighbour.
Does it work offline?
Yes. Once the page has loaded, it plays through with the network off.
What if I stop halfway?
The board, score and remaining moves are kept, and reopening resumes from there.