[i][b]Quarto[/b][/i] is a board game for two players invented by Swiss mathematician Blaise Müller.It is published and copyrighted by Gigamic.[br]The game is played on a 4×4 board. There are 16 unique pieces to play with, each of which is either:[br][list][*]tall or short;[/*][*]red or blue (or a different pair of colors, e.g. light- or dark-stained wood);[/*][*]square or circular; and[/*][*]hollow-top or solid-top.[/*][/list]Players take turns choosing a piece which the other player must then place on the board. A player wins by placing a piece on the board which forms a horizontal, vertical, or diagonal row of four pieces, all of which have a common attribute (all short, all circular, etc.). A variant rule included in many editions gives a second way to win by placing four matching pieces in a 2×2 square.[br][i]Quarto[/i] is distinctive in that there is only one set of common pieces, rather than a set for one player and a different set for the other. It is therefore an impartial game.

[b]大同棋(四連戰)[/b]（Quarto），是Blaise Müller(布萊斯·穆勒)在1991年推出的連棋類遊戲，其玩法是屬於無偏博弈。1993年被門薩國際評選為門薩推薦的遊戲。1993年德國年度遊戲獎推薦。[br][b]棋具[/b][br][list][*]4*4方格棋盤，共16個棋位。[/*][*]雙方共用16枚棋子。每枚棋子皆有4個特性，每種特性具2種類別。但沒有任意2枚棋子全部特性都相同。[list][*]顏色：深或淺[/*][*]高度：高或低[/*][*]形狀：方或圓[/*][*]虛實：中空或實心[/*][/list][/*][/list][b]棋規[/b][br][list][*]空秤開局，棋子先放在棋盤外。[/*][*]玩家2-6人。[/*][*]每回合，先由對手任選一枚在場外的棋子，再由己方放在任一空格。[/*][*]四枚有相同特性的棋子以正或斜向連成一線即獲勝。[sup][url=https://zh.wikipedia.org/wiki/%E5%A4%A7%E5%90%8C%E6%A3%8B#cite_note-1][1][/url][/sup][/*][/list][b]進階規則[/b][br][list][*]玩法1、當四枚有相同特性的棋子在四個鄰邊格連成方形也獲勝。其餘規則相同。[/*][*]玩法2、當四枚有相同特性的棋子在四個不相鄰格子中連成方形也獲勝（可以是斜方、菱形方）。其餘規則相同。[/*][/list][br]