A drinking and more strategic version of Tic tac toe, to be played in pubs. The rules are as follows: a 3x3 grid is necessary for (at most) 9 glasses of beer. The first player opens with ordering one glass of beer and placing the glass on one of the 9 spaces. From then the play alternates between the two players. A player can always choose one of the two possible options: - order and place another glass of beer to an open space (available only until there are open spaces left) - or drink a half glass of beer. Whenever there is a line (column, row or diagonal) consisting of 3 full, 3 half-full or 3 empty glasses, the player achieving this wins (and the other player pays the bill).

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