Maximum difference of tricks in same contract
Round 1, Board 4                           
Dealer: W                         
Vul: Both                         
            A86                   
            KT763                 
            A6                    
            QT8                   
    T9754           QJ3           
    A92             QJ84          
    QT              J954          
    974             AJ            
            K2                    
            5                     
            K8732                 
            K6532                 
In this deal, when South Africa played China, the Chinese NS made 7 tricks at 3NT while the SAfricans made 12(!) tricks -well, at 1NT.

3NT with 21?
Round 1, Board 6                           
Dealer: E                         
Vul: EW                           
            A65                   
            8652                  
            KQ3                   
            A85                   
    Q3              T9874         
    KJT943          AQ            
    4               AJ865         
    KJT9            2             
            KJ2                   
            7                     
            T972                  
            Q7643                 
This was usually played at 4S, made with a winkle by Martel at USA1 v USA2.
Look at the intermediaries. Indonesia made 3NT (with merely 21 HCPs).
A good steal
Round 1, Board 9                           
Dealer: N                         
Vul: EW                           
            9                     
            A8752                 
            A643                  
            AT5                   
    AJ874           KQT5          
    9               KJ4           
    KQ2             JT97          
    KQ73            82            
            632                   
            QT63                  
            85                    
            J964                  
EW have 4S but NS of SAfrica (v China) and of France (v Canada) stole the board at 2H and made this (the French with an overtrick).

Am I missing something? Round 2, Board 2 Dealer: E Vul: NS KT 854 A9632 653 J753 942 QJT9 AK732 J7 KQT KQT 92 AQ86 6 854 AJ874 No less than eight NS teams won the bidding in some diamond contract, from 3D to 5D and all of them made either 11 or 12 tricks. Am I missing something???? 19 out of 20 Round 2, Board 15 Dealer: S Vul: NS AK954 J AQ42 764 86 Q32 KT87 63 KJT93 865 Q9 AT832 JT7 AQ9542 7 KJ5 19 out of 20 declarers went minus at this board. For EW, down three at 3D was the most frequent minus score, usually doubled. Only six times did NS declare, and five of them were at 4S, down two. The 20th declarer was the Swedish South who bid 2H and made it with an overtrick. Licking his chops, but... Round 2, Board 20 Dealer: W Vul: Both QT AQ875 T9743 4 KJ32 8754 JT9642 3 J8 A62 J QT876 A96 K KQ5 AK9532 When USA1 played Australia&&checkit;&, I presume that the bidding went 2H by the US West, four-card major and all, passed out to South who doubled. North might have been licking his chops, but in the end declarer made it two hearts doubled for 670. Pakistan EW registered 360 for 1H doubled and made with an overtrick -West opened 1H? Note that EW made their contract with a mere 13 points, while it is very difficult for NS to score more than a partial. In fact, several were the casualties at 3NT; only Brazil made it against host Bermuda, but I presume they received a hospitable defence. The swan Round 4, Board 1 Dealer: N Vul: None KQT42 J T9876 Q4 J86 5 Q5 T62 KQ52 J43 KT98 A76532 A973 AK98743 A J Allegedly 7-4-1-1 hands (whose shape has been described as a swan by Culbertson, I guess) play better in the long suit but this was not the case here. Only 6 out of 20 pairs missed the slam, curiously including both US teams and Canada. Another way to score 800 Round 4, Board 3 Dealer: S Vul: EW KJ7 AK985 AKJ3 T A8652 QT94 QJ7 642 T8 6 K53 AQ874 3 T3 Q97542 J962 Indonesian NS scored 800 here by making 5D redoubled. It is not obvious why the Australian E or W doubled and I don't have the bidding records, but three of his counterparts also did so. After the redouble, EW might have thought to run to 5S. This would possibly also cost 800, so at least they had found a more original way to concede this score. Chinese bid 6D despite Easley and they made it after the Poles failed to cash their aces. =============================================================================== SuperMoysian Round 4, Board 8 Dealer: W Vul: None Q97 53 K9853 653 854 KJT2 KQT98 AJ6 AJT7 Q K AQJT7 A63 742 642 9842 13 of the 20 EW pairs bid slam here, but the Brazilians were the odd men out. For some reason they alighted at 6C at their 5-1 fit. No problem, they made it as well and they gained a swing against the 4H+2 recorded by the Bulgarians in the other room. =============================================================================== Super-super Moysian Round 4, Board 11 Dealer: S Vul: None K65 - T9743 AQJT5 T98 432 T96 87432 KQ86 J5 872 K96 AQJ7 AKQJ5 A2 43 Six clubs is doomed on a diamond lead and presumably this happened all five times it was bid, so it failed unanimously. However, three times NS elected to bid 6NT and twice this attracted a "safe" spade lead (I presume again) so it made. The Bulgarians tried to do one better than their Brazilian opponents had done at board 8 (see above), so they bid the slam in hearts, at their 5-0 fit. No chance however, they went two down. =============================================================================== Yarborough fit Round 4, Board 16 Dealer: W Vul: EW AKT QT A65 98754 873 96542 A5 9743 KJ97 43 KJT3 62 QJ KJ862 QT82 AQ NS have a boringly easy 3NT and nearly all pairs bid it but in the Nordic derby between Norway and Sweden the Swedish thought it better to double EW at 1S! Declarer (presumably East) added insult to injury by making contact despite the perfect Yarborough he held; actually more than perfect since his combined trump suit was also a Yarborough. ===============================================================================