Vimbre is a drawless connection game for two players: Black and White. It is played on the intersections (points) of an initially empty square grid (board). The top and bottom edges of the board are colored black; the left and right edges are colored white. To flip a stone is to replace it with a stone of the opposite color. Black plays first, then turns alternate. On your turn, perform exactly one of these actions: Place one or two stones of your color on empty points. On their first turn, Black can only place one stone. At the end of your turn, for any two diagonally adjacent stones of your color there must be another stone of your color adjacent to both. Flip an enemy stone that is sandwiched between two friendly stones adjacent to it on the same orthogonal line. This kind of move is illegal if all the other points orthogonally adjacent to said enemy piece are occupied by enemy pieces. Passing is not allowed, but, if you have no legal moves available, your turn is skipped. You win if there is a chain of orthogonally connected stones of your color touching the two opposite board edges of your color.

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