Dominoes spots from one to six are generally arranged as they are on six-sided dice, but because blank ends having no spots are used, seven faces are possible, allowing 28 unique pieces in a double-six set. However, this is a relatively small number especially when playing with more than four people, so many domino sets are "extended" by introducing ends with greater numbers of spots, which increases the number of unique combinations of ends and thus of pieces. Each progressively larger set increases the maximum number of pips on an end by three, so the common extended sets are double-nine, double-12,
42 (dominoes) can lose a trick. Looper is not widely played and is rarely allowed by legitimate 42 players. In some houses of play, no stacking of dominoes is allowed regardless of the winning bid. In others, a bid of one mark entitles the contract-winning team to stack the won tricks in two stacks of equal height, where a bid of two or more marks entitles them to stack the won tricks in a single stack. 42 (dominoes) 42, also known as Texas 42, is a trick-taking game played with a standard set of double six dominoes. 42 is often referred to