Fuente: www.qldbridge.com 
BOLS BRIDGE TIP– Give Declarer Enough Rope By Tim Seres
One of the things which I remember about my earlier bridge days was a contest sponsored by the alcohol company Bols. The objective was to gather a collection of tips from famous players the purpose of which to impart some of their wisdom to improving players. I thought it would be interesting this year to revisit some of these tips.
Tim Seres “owned” the Gold Coast Congress, winning the teams and pairs countless times over the life of the tournament. While sadly Tim passed away in 2007 his bridge legacy lives on in articles like this one. In the long haul you win at bridge by avoiding error rather than by being brilliant. The expert may display an occasional glimpse of genius or elegance, but he owes his preeminence to the fact that he makes fewer mistakes than his fellow players.
Because bridge is a game of errors, you should try to develop the knack of giving an opponent the chance to go wrong. One way of doing this is by providing the declarer with a choice of plays in a situation where he would otherwise be bound to make a winning play.
This is the trump suit and declarer starts by laying down dummy’s ace. If West follows small, declarer will play low to the king on the next round, exposing the finesse against the jack. (Declarer has no way to succeed if East has J-9-x-x.) West, however, should drop the nine on the first round. Now declarer may continue with dummy’s queen, playing East for J-x-x-x. The next example is also well known:
South plays low to the ten. If East wins with the jack, declarer has no choice but to enter dummy and finesse against the king on the next round. East therefore should win the first trick with the king. This affords declarer a losing option, as he may finesse the nine on the next round, playing West for J-x-x-x. Opportunities for such plays come along much more frequently than many players realise. The following hand occurred in a top-class pairs event:
At this table South won the diamond lead and tested spades. On the ace and king of this suit East dropped the jack and ten! Not surprisingly, declarer assumed that the spades were 4-2 and he continued by playing low to the nine, hoping to re-enter dummy with a heart. But East of course ducked the king of hearts when it was led. The contract could now have been made only on double-dummy lines and in actual play South finished one down.
The hapless declarer had fallen victim to a defender who followed the very profitable adage, ‘Give declarer enough rope…’ My BOLS Bridge Tip is just this: When you can see that declarer is bound to succeed by normal play, look for a chance to give him a losing option. It stands to reason that if you consistently give your opponent a chance to go wrong, he will sometimes take it!