Bridge Logic: The Bidder's Game

By Sanjoy Bhattacharyya
Published: 24, Feb 2012

Sanjoy Bhattacharyya is a Partner at Fortuna Capital, a Mumbai based investment advisory firm. He is an alumnus of Loyola College, Chennai where he pursued Statistics and Mathematics at the undergraduate level and subsequently earned a post-graduate diploma in management from IIM Ahmedabad. He was the erstwhile Chief Investment Officer of HDFC Asset Management Company prior to which he was associated with UBS Warburg. Despite having played competitive bridge for almost 25 years, he remains a keen student of the game and believes it has much in common with investing and statistics. He has a keen interest in psychology and literature apart from his passion for bridge.

2♠ is fourth suit forcing to game and 3 clarifies that North has a 6 card diamond suit of decent quality. The next three bids are cues indicating first or second round control. The 4♣ bid by South is the stepping stone to reaching the slam since it conveys two crucial messages to partner – by consciously going past the level of 3NT (a favourite resting place, particularly at Match-Points) it suggests a better than minimum hand with interest in a diamond slam. 4 is RKCB with diamonds set as trumps. North, looking at 3 key cards knows that 4 means one with partner, either of the red suit Aces. If it is the Ace, and the bidding hints at ♣K and K as well, then the diamond slam is likely to be in jeopardy on a heart lead. The prospect of South holding KQ in addition is ruled out since he would have made an opening bid of 1NT with 15 points. The most likely extra values that South holds are either ♠K with one of the minor suit knaves or ♠QJ and the knave of diamonds. Spade King and the jack of clubs make 6NT a near certainty. The worst case is ♠QJ, K, AJ & ♣?K wherein 6NT will hinge on either the spade hook working or the heart Ace being favourably located and clubs dividing 3-3. Alternately if the key card is Ace combined with 3 additional kings, the slam will depend on partner holding the J. Even if South were to hold ♠QJ, AK, J & ♣K there are 11 certain tricks with either the spade finesse or club break providing the twelfth trick.

Not only did the deal below set Texan Aces on the path to victory, it was marked by high drama since the declarer – North – could have brought home a doubled contract. After partner pre-empts 3♣, North lands in 4♠. With just three deals to go in a needle match, you summon the courage to double and find yourself on lead holding ♠Q62 K103 A10762 ♣J4. Which card do you pick? The major suits are ruled out and the A may well prove too risky. Finally the ♣J hits the baize and declarer ruffs with a low trump. He plays the trump Ace next hoping to drop the singleton 10 but to no avail.

Fearing a 4-1 trump split with East holding Q10xx for the double, he takes the marked heart finesse and ruffs a second club. Clearly, declarer is banking on East being 4-3-4-2 with an eventual heart throw-in to land his contract. With this in mind, he plays a low diamond towards dummy. Take a look at the hand below and decide where your sympathies lie!

East now rose with the Ace, gave his partner a subsequent diamond ruff and eventually collected a trick in each major. The mind of the expert is truly a black-box that is error-prone under intense pressure. Three nerve-wracking choices arose on a single deal – first, should South raise partner to game, second is the double warranted by East and finally, should declarer play East for 4-3-4-2 or 3-3-5-2.

As Mr Spock put it in Star Trek, “logic is a wreath of pretty flowers that smell bad”.

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