Contract bridge grand slam exists. The modern game of contract bridge was the result of innovations to the scoring of auction bridge by Harold Stirling Vanderbilt and others. The most significant change was that only the tricks contracted for were scored below the line toward game or a slam bonus, a change that resulted in bidding becoming much more challenging and interesting. Also new was the concept of "vulnerability", making sacrifices to protect the lead in a rubber more expensive. The various scores were adjusted to produce a more balanced and interesting game. Vanderbilt set out his rules in 1925, and within
Singaporean bridge Singaporean bridge Singaporean bridge is a re-invention of sorts of the traditional game of contract bridge. This version of bridge derives its name from where it is believed to have been invented, Singapore, and just like its traditional predecessor, there are variations in the rules. It is also known as floating bridge. Essentially, a deck of 52 cards is used, and 4 hands of 13 are dealt. Players assume fixed seats, but unlike contract bridge, the partners are not determined at the outset by virtue of north-south or east-west — they are determined at the end of the bidding. There