Chess Assistant 26 v12.00

Chess Assistant 26 v12.00

Chess Assistant 26 is a unique tool for managing chess games and databases, playing chess through the Internet, analyzing games, or playing chess against the computer. Chess Assistant 26 includes grandmaster level playing programs, Chess Opening Encyclopedia mode, a powerful search system, the unique Tree mode, databases of about 9.79 million games in total (Dec. 1, 2025) that can be automaticaly updated 3000 new games.

In addition to the grandmaster level engine Rybka 4 coming with the package, Stockfish 17.1, the confirmed leader among chess playing programs, will be automatically downloaded and plugged in upon installation. Stockfish and Rybka can perform any type of analysis: multi-pass game analysis, Interactive analysis, Background analysis. You can easily connect Chess Assistant 26 to any other UCI playing programs like Komodo. The programs can perform various analysis tasks for any needs.

Automatic opening annotation
Searches for novelty, adds expert annotations from the Opening Encyclopedia, CAP evaluations, inserts reference games etc.

Search for blunders
Reveals bad moves.

Multi-pass game analysis
An advanced analysis method to fine-tune each step of the search. You can even choose different engines for each phase of the game.

Analysis markers
Allow you to mark selected positions for automatic analysis at a later time.

Interactive analysis
Allows you guide the engine in its analysis and pick lines, remembering the results.

Chess Opening Encyclopedia
Includes rich theoretical material on all openings, more than 8000 annotations by GM Kalinin and 40 million evaluations by strongest engines key positions. Customizable key system.

When it comes to searching
You will not find a more powerful system. Chess Assistant 26 offers search by position, header, maneuvers, material, comments, novelty search, advanced search by material in 12 regions of the board and more!