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
Euchre game variations by all players. The contractor is of course vulnerable however, and if he or she fails to take the number of tricks bidden, he or she loses that number of points. A player wishing to bid all eight tricks calls "shooter", and if successful gains not eight but 12 points. Score is kept on paper and the game is played to 31. A player bidding less than eight and subsequently winning all eight tricks will only score eight points. A somewhat popular three-handed variation exists. Players sit as though there is a "ghost player" in the fourth position. A hand