I participated in competitions of bridge some years ago. In all the systems I've seen there are not many invitational sequences to game so many games with tiny chances of success are bid so many IMPs lost. Even after many rounds of bidding the partners do not know the exact distribution, the partners strength, distribution of honors in 4 colors and cue bids are for A or K or shortness so many good slam are not bid and many bad slam are bid. Most of these shortcomings can be remedied by using my bidding system (natural base structure) that can be a turning point in many ways, especially the original conception (a more accurate evaluation of the hands, natural sequences with weak hands, invitational sequences after opening bidding or interventions, relays sequences in which captain find the exact distribution, number of points +1 and the number of controls at game level) from the file The_Professional_System_v8.xlsx. The example files are with all 16 hands x 8 sets =128 hands from the final of the 2015 World Bridge Teams (Bermuda Bowl, Venice Cup, d’Orsi Trophy). The first step after following the link to https://drive.google.com/open?id=0B5qU_c6TScKKN0p3SG1ldDFrWEU is to open (downloads) the word file The 2015 World Bridge Teams.docx For questions, comments, suggestions you can send me a mail at ramocanu@yahoo.com Please forward this to other competition bridge players.