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One sentence nearly doubled Gemma’s Tetris score. It took about 100 experiments to find it.

“Don’t overthink, make quick decisions.” That was the instruction. Chuan Li described it in his talk about Claude coaching Gemma through a Tetris-like game. Claude had been editing a roughly 1,000-word system prompt. The jump came when that short sentence went in the user prompt, right before the b…

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  1. 2026-10-01 03:50 · r/PromptEngineering
    One sentence nearly doubled Gemma’s Tetris score. It took about 100 experiments to find it.

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