Monte Carlo Analysis yields precise evaluations by playing
thousands of ultra-fast games in a few minutes in a given position. This is
very much like using game result statistics, something human players do when
choosing their opening variations. Monte Carlo Analysis can be used in any position,
but generally it's most useful in two types of positions:
Interesting: in the starting position the Monte Carlo Analysis gives a 52.8%
win probability for White
Sampled Search gives detailed information about the search
process, showing scores and alternative moves in the main line. This is helpful
when the program searches for a long time in one position. It lets the users
see how the engine is thinking and making its decisions.
Note that in in the live search you can see that the Rybka engine is working
on Kasparov's famous 30.Rxb7 sacrifice, which has not turned up in the engine
window yet (it will become the main variation after the next iteration). Note
too that the square Chess Informant symbol behind certain moves means that these
are forced.
Singular Moves are annotated graphically. This indicates situations
where only one clearly best move exists.
Look for win: whenever you feel that there should be a forced
win in a position you can explicitly ask for it. Rybka then searches for a decisive
move, considerably faster than in normal analysis.
New high-resolution 3D Staunton pieces in Rybka 3
Persistent Hash: Rybka can save its hash tables between analysis
sessions to preserve valuable information already accumulated in the search
tree.
The author of Rybka, Czech-American International Master Vasik Rajlich,
has implemented an extraordinary understanding of dynamic factors into his program.
This often results in long-term pawn or exchange sacrifices and an active positional
playing style resembling human chess. Rybka scores well in all types of situations
but dominates especially in asymmetric positions which arise e.g. from Sicilian
systems.
The success of the program stems from dedicated team work: IM Iweta
Rajlich, rated 2417, is the main tester; Jeroen Noomen contributes
opening theory and tournament preparation; IM Larry Kaufman develops positional
algorithms.
System requirements: Minimum: Pentium 1 GHz, 512 MB RAM, Windows Vista or XP (SP 2), DVD ROM drive, Windows Media Player 9. Recommended: pc Intel Core Duo 2.4 GHz or higher, 4GB RAM, Windows Vista, GeForce8 or compatible graphics card with 256 MB RAM or higher, 100% DirectX compatible sound card, Windows Media Player 11, DVD ROM drive.