Ian's Server

Sorry, this Javascript puzzle doesn't seem to work in your web browser. Perhaps you have Javascript disabled, or perhaps your browser doesn't provide a feature that the puzzle code requires (such as typed arrays). These puzzles have been successfully run in Firefox 19, Chrome 26, Internet Explorer 10 and Safari 6.

Game: blackbox bridges cube dominosa fifteen filling flip flood galaxies guess inertia keen lightup loopy magnets map mines net netslide palisade pattern pearl pegs range rect samegame signpost singles sixteen slant solo tents towers tracks twiddle undead unequal unruly untangle Manual for singles

Black out some of the squares, in such a way that:

• no number appears twice in any row or column
• no two black squares are adjacent
• the white squares form a single connected group (connections along diagonals do not count).

Click in a square to black it out, and again to uncover it. Right-click in a square to mark it with a circle, indicating that you're sure it should not be blacked out.