ScanBridge

Software and articles devoted to the automatic play of bridge game



«Analysis of the game of Bridge is extraordinarily complicated.» *




ScanSuit 9.01
ScanDeal 9.12
ScanGame 9.03



This site presents software and papers about bridge written by

Joël Bradmetz.

For any comment contact the author at
joel.bradmetz@scanbridge.net





The reader discovering a bug in a sofware presented here will receive free of charge the key activating the full version.

ScanSuit is a program for the universal treatment of a suit at bridge


By convention south is declarer and plays the suit. North's hand is visible to the other three players. ScanSuit uses the method of the best defence and considers that East-West always play perfectly. Not only do they know North-South's cards but also their strategy. In classical analyses of suit treatment it is assumed that North-South have the necessary entries. There is no danger in East-West taking intermediate tricks because, if they come back to the suit in question, it can never bring them any advantage.

   Details of ScanSuit functions

   Download ScanSuit


ScanDeal is a program for the exact analysis of any deal or puzzle at bridge



ScanDeal analyses any deal of bridge. It provides all contracts for all players, signalling the best ones and the Par of the deal. It allows a complete analysis of a deal by providing the correct solutions or by letting the user control the play, allowing him to correct his mistakes.


   Details of ScanDeal functions

   Download ScanDeal


ScanGame is a program for the analysis of a bridge competition



During competitions, especially pairs tournaments, deals are rarely analysed due to lack of time. Afterwards, a lack of documentation (i.e. when a single copy of the deals is made) means that a valuable learning opportunity has not been exploited.
ScanGame has been conceived to facilitate the analysis a posteriori of all the deals in a competition.
The principle is simple : deals and result sheets are captured with an interface designed to avoid errors. The software then analyses the deals and sends the results by e-mail to each player. The analysis provides a clear and aesthetic presentation of the deal, all contracts achievable by each player with any trump suit, the best contract for each player, the Par of the deal, and all the correct leads for every contract of the deal.

   ScanGame's capture interface (reduced to 1024 x 768)

   Download ScanGame


Program for the full game, auction and card play


   Some problem linked to the writing of a bridge program (in French)

   Auction interface (click on the picture to get the real size)

   Card play interface (click on the picture to get the real size)


Various contributions to the study of bridge game



  Theory of the play of a suit at bridge

(Paper published in The Bridge World section Esoterica Articles) (see the bottom of the page, section Articles : Theory of the play of a suit at bridge by Joël Bradmetz)
http://www.bridgeworld.com/indexphp.php?page=/pages/readingroom/esotericamainpage.html

   La psychologie du bridge (in French)

   Automatic treatment of a suit at bridge

   Fréquences des mains et des types de mains (in French)

   Detail of the reduction to 50,195 basic hands

   Les honneurs groupés et le moindre choix (in French)

   Les places vacantes et la loi hypergéométrique (in French)

   Analytical files of the basic hands (.XLS)

   Verification of the analyses of the American Encyclopedia of Bridge (.XLS)

   Les solveurs double mort et la recherche par partition (.PDF)

   Demonstration of Minimax and Alpha-Beta algorithm

   Program for the computing of the hypergeometric law


* Frank, I & Basin, D. (2001). A theoretical and empirical investigation of search in imperfect information games.Theoretical Computer Science, 252, 217-256.