BSOL

Bridge Solver Online

This is a fork of the original Bridge Solver Online authored by John Goacher (https://mirgo2.co.uk/bridgesolver/)

Javascript

Code has been split into several files:

• Function definitions into functions.js
• Events into events.js
• Help text into helpText.js
• Inline javascript moved into the separate files
• Upgraded jQuery to jquery-4.0.0.min.js
• Main functionalities remain in ddummy6.js

Language

To allow text (help text and display text) to appear in other languages the following concept has been applied:

• A language switcher has been created (changeLanguage()). Whereever possible displayed text is piped through this function
• Added flags on the frontpage to allow the switch of language
• Currently English and German are implemented
• The default language is defined in ddummy6.js (e.g. language="en"). Language codes follow the 2-character code (e.g. en, de)

Styles

Inline Styles have been removed and added to the respective style sheet

HTML

• HTML has been corrected to comply with W3C standards.
• Frontpage renamed to index.html

Functionality

Layout and buttons

The frontpage has been changed such that navigational buttons are visible at all times.

Loading of hands

Hands can be entered and analyzed in various ways:

• Choosing a local file by clicking the respective button on the frontpage
• Dropping a file onto the area on the frontpage covering the buttons
• Paste (CTRL-V on Windows/Linux, CMD-V on Mac) on the frontpage
• Using the respective button on the frontpage to retrieve data from the clipboard (requires user consent to read from the clipboard)
• Manual input of single hands by using the respective button on the frontpage
• Loading a remote file via an URL parameter (e.g. ?file=https://example.com/tournament.pbn)). The remote server has to allow loading data via HTTP header Header set Access-Control-Allow-Origin * or more specific Header set Access-Control-Allow-Origin "https://thedomain.com".
• Board data can be provided completely with URL paramters
• For an overview of all available URL parameters see the file URL-Parameters.html

Supported file formats:

• .pbn
• .dlm
• .lin (BBO play and hand record files)

Handling of content in .pbn files

The [Result section of a .pbn file can optionally contain plain text enclosed in curly brackets. If present the text contained within is displayed at the bottom of the respective board in a highlighted box. The text may contain HTML markup for styling purposes.

• When present in a .pbn file Play, Auction, Playerlist, Contract and Score have been added to the display similar to the handling of respective content in .lin files.

URL parameters

Two additional URL parameters have been implemented. For a full list of parameters see list of URL parameters

• lang: sets the language for displayed text including help text. Language is a two-character code, e.g. lang=de.
• nav: turns on/off the navigation buttons, e.g. nav=0 hides the navigation buttons.

Double Dummy Solver

Boards are analyzed using the double dummy solver authored by Bo Haglund / Sören Hein and implemented as a WebAssembly module. The analysis runs completely in the browser (no server component necessary).

The provided version is based on the DDS3 project (https://github.com/dds-bridge/dds) currently using the released version 3.1.

The sources for the WebAssembly module can be downloaded from here: https://github.com/krtschil/bsol-wasm/releases.

AI support

Claude/Sonnet 5 and GitHub/Copilot helped in analyzing and fixing code where necessary.