After reading a recent thread on the general strategy adopted when playing in a long imp match (48+ boards), I have some queries.
1. In an imp game, it was reccommended that defenders should switch off and conserve energy when it is clear that the contract is cold and only overtricks matter.
Q: How do you establish the contract is cold (Exluding those where you can count enough top tricks ? Do you "switch off" once you see dummy has underbidded by maybe like 5+ HCP? Or you see a combined 26+ HCP and no bad breaks ,all key finesses on, etc? Can you rely on declarer's level of confidence: He starts playing rapidly, giving no thought to the play at all (I recognise he may be trying to hoodwink you but I am refering to cases where you feel he is confident of his play and testing out the key suits)
2. How do you build up stamina or train your consistency required for long imp games? Given it is not very plausible to play long matches against good opponents every week (or even month) , how do you train for such matches? Does playing online for long periods help given your aim is to cut down on errors and maintain a reasonable level for long periods? Or is it just a waste of time because the two types are really different kinds of bridge?
Sorry for long-winded paragraphs

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