: While Wikipedia confirms that .rar is a standard archive format, the appended .bfdcml is not standard.
The suffix ".rarbfdcml" seems unusual and might be a typo or a misinterpretation. Typically, a RAR file (a type of compressed archive) would have a ".rar" extension. The additional letters could be a mistaken inclusion or a nonsensical string, possibly resulting from a miscommunication or a technical glitch. Internet Chess Killer 1.71 Chess Program.rarbfdcml
I notice you’ve mentioned with a file name ending in .rarbfdcml and the phrase “deep feature.” : While Wikipedia confirms that
Beyond the park, the horizon held the low glow of servers and the arithmetic breath of machines. Inside each, a thousand choices were being made. In one small corner, a rook with crossed skulls blinked on, waited, and then—without malice—recommended a line of play. The additional letters could be a mistaken inclusion
The program operates using a screen-capture and analysis loop:
A final message appeared in the center of the darkness, written in low-res, 8-bit font: "GOOD GAME. REMATCH?"
ICK will scan the screen; once the starting position is recognized, it begins synchronizing moves. :