Bridge Calculator is set of freeware/donationware programs written by Piotr Beling which solve problems in the Bridge card game.

Newest version (19.08.0 from 4 VIII 2019) includes:
• double dummy problem solver
  which
  • quickly solves double dummy problem
  • has graphic user interface (GUI)
  • also has simple, console-based user interface
  • allows for importing deals from files (from disk or directly from Internet) in many formats:
    • PBN (Portable Bridge Notation)
    • Bridge Base Online .lin files
    • files generated by the KoPS program (txt and html)
  • can scrap URLs with deals from some web-pages (using dedicated scripts)
  • allows for exporting deals to PBN (Portable Bridge Notation) files
• single dummy solver
  • statistical analyses
  • the Monte Carlo algorithm and others
  • has graphic user interface (GUI)
• deals generator
  • generates (randomly) card distributions that meet given requirements
  • is scriptable in Lua language
  • uses multiple threads to generate and filter distributions of cards
  • has built-in, fast double-dummy solver and tools for statistical analyses
  • has console-based, shell-script-friendly user interface
  • see documentation
• API to double dummy solver for programmers
  • library (with API) in C
  • dependency-free
  • stable API and ABI
  • available for Windows, Linux and MAC OS
  • see documentation

Programs are free to use and are available in multiple languages: English and Polish. Applications are multi-platform, supporting: MS Windows and GNU/Linux (API is available also for MAC OS). Installation is not required (just extract and run).

Creation of Bridge Calculator is my hobby. Besides, its engine is developed as a part of my PhD thesis and scientific papers:

• Piotr Beling: Partition Search Revisited IEEE Transactions on Computational Intelligence and AI in Games, Volume: 9, Issue: 1, Pages: 76-87, 2017, DOI: 10.1109/TCIAIG.2015.2505240
• Piotr Beling: Efektywne rozwiązanie problemu rozgrywki w otwarte karty w brydżu Metody Informatyki Stosowanej 3/2011, page 5 [PL]

I hope that you will find the software useful. If so, you can make a donation for it.

I wish you pleasure using of the program.
At the same time I would be very grateful to you for any advice and help,
Piotr Beling, PhD