Complex sentence: The significance of the Blondie24 program is that its ability to play checkers did not rely on any human expertise of the game, rather, it came solely from the total points earned by each player and the evolutionary process itself.
Split into simpler sentences: The significance of the Blondie24 program is that its ability to play checkers did not rely on any human expertise of the game. Rather, it came solely from the total points earned by each player and the evolutionary process itself.