Use Case 5: Rubik’s Cube Solver

Can an AI write complex algorithmic solvers from scratch?

We tasked Fugu Ultra and three frontier models with writing a Rubik’s Cube solver in pure Python from a single prompt. No off-the-shelf solving libraries were allowed. We then ran the… pic.twitter.com/7xYsZrbV4U

— Sakana AI (@SakanaAILabs) 23 juin 2026

Use Case 5: Rubik’s Cube Solver Can an AI write complex algorithmic solvers from scratch? We tasked Fugu Ultra and three frontier models with writing a Rubik’s Cube solver in pure Python from a single prompt. No off-the-shelf solving libraries were allowed. We then ran the

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