About: Offence to defence ratio   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : dbkwik.org associated with source dataset(s)

The offence to defence ratio (ODR) refers to how a hand will perform differently when it is played as a declarer or a defender. A high ODR means that the hand is better played as a declarer, while a low ODR means that the hand is better played as a defender. It is not a formalised concept and has no clear mathematical formula for it. For example, the following hand has a very high ODR: It can be played greatly in ♥s, guarantees 7 tricks even opposite a partner with no values, but can take at most 2 tricks if the contract is in a suit other than ♥s. * long and solid trumps * side shortness

AttributesValues
rdfs:label
  • Offence to defence ratio
rdfs:comment
  • The offence to defence ratio (ODR) refers to how a hand will perform differently when it is played as a declarer or a defender. A high ODR means that the hand is better played as a declarer, while a low ODR means that the hand is better played as a defender. It is not a formalised concept and has no clear mathematical formula for it. For example, the following hand has a very high ODR: It can be played greatly in ♥s, guarantees 7 tricks even opposite a partner with no values, but can take at most 2 tricks if the contract is in a suit other than ♥s. * long and solid trumps * side shortness
dcterms:subject
dbkwik:bridge/prop...iPageUsesTemplate
abstract
  • The offence to defence ratio (ODR) refers to how a hand will perform differently when it is played as a declarer or a defender. A high ODR means that the hand is better played as a declarer, while a low ODR means that the hand is better played as a defender. It is not a formalised concept and has no clear mathematical formula for it. For example, the following hand has a very high ODR: It can be played greatly in ♥s, guarantees 7 tricks even opposite a partner with no values, but can take at most 2 tricks if the contract is in a suit other than ♥s. In contrast, the following hand has a very low ODR: No matter what suit it is played in, the short suits generally perform well because they have high honours in them. Normally, the following are good for an offensive hand: * long and solid trumps * side shortness and the following are good for a defensive hand: * side honours * balanced shape The ODR of a hand is an important thing to consider in competitive auctions, when deciding whether to bid on, or double them for penalty.
Alternative Linked Data Views: ODE     Raw Data in: CXML | CSV | RDF ( N-Triples N3/Turtle JSON XML ) | OData ( Atom JSON ) | Microdata ( JSON HTML) | JSON-LD    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 07.20.3217, on Linux (x86_64-pc-linux-gnu), Standard Edition
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2012 OpenLink Software