Rybka: 5

: For users with multiple processors, Deep Rybka can share its analysis across cores or even across different engine instances in real-time, providing a more robust and "stable" evaluation score. Tips for Getting the Best Results

: When used within the Aquarium interface, IDeA allows you to build a comprehensive "tree" of variations. It doesn't just show you the best move; it explores why other plausible moves fail and visualizes the long-term consequences, effectively producing a complete map of a complex position. Rybka 5

: In Aquarium, set a "delta" (e.g., 25 centipawns) to limit multi-PV analysis to only those moves that are competitively close to the best move, preventing the engine from wasting resources on obviously poor alternatives. : For users with multiple processors, Deep Rybka

: This feature allows the engine to "remember" previously analyzed positions across different sessions. This is critical for producing a "good" feature in a long-term project, such as building an opening repertoire, as the engine becomes faster and more accurate the more it re-visits a line. : In Aquarium, set a "delta" (e

What is your ? (This affects how you should configure Deep Rybka's threads.) Rybka 3 Aquarium Overview

: Be aware that Rybka can show either Absolute scores (+ is always white's favor) or Relative scores (+ is the side to move's favor) depending on your GUI settings.