Query is a connection game for two players: Black and White. It's played on the intersections (points) of an Alquerque style board which is initially empty. The north and south edges of the board are colored black; the west and east edges are colored white. There are two kinds of points on the board: connectivity-8 ('c8', those with diagonal lines converging on them) and connectivity-4 ('c4', those with only horizontal and vertical lines converging on them).

Starting with Black, players take turns placing either two friendly stones on empty c4 points or one friendly stone on an empty c8 point. In this implementation, to balance the game, Black can only place one stone on a c4 point on his first turn.

The game is won by the player who completes a chain of his own stones which touches the two opposite board edges of his color. A chain is a set of like-colored, connected stones. Two stones are connected if they occupy orthogonally adjacent points or diagonally adjacent c8 points.

As in Hex, draws are not possible, and a completely filled board will produce exactly one winner.

NOTE: Two different board graphics are featured. Click the button "switch piece set" to alternate between them.

It's based on a general idea which was first stated by Torben Ægidius Mortensen.

Also see Query at MindSports.