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A tactical game with black and white wooden chips players try to collect. In the beginning, in front of each player lies as a row of mixed up black and white chips. According to different "formulas" printed on cards, players may trade a row of chips (e.g. black-white-white-black) for a different set (e.g. black-black-black). When a formula card is used it is discarded and a new one is drawn. Making skillful use of the "currency" allows players to change chips as long as they end up having collected chips of only one color - they win!