Developer Tests Decision AI Jev Solving Rubik's Cube Like a Human

On September 22, blogger gdechichi posted a series documenting his experiment having @typesafeai's decision-making AI "Jev" solve a Rubik's Cube on its own: not only did Jev succeed, it solved the cube layer by layer like a human, rather than using the graph-search approach typical of computers. The whole solution runs directly in the engine, with a WASM payload of only about 200KB. gdechichi, who was a deep-diving cuber in his childhood, was motivated precisely by the difference between how humans and computers solve the cube.

Confirmed

Computers have long been able to solve Rubik's Cubes, but via graph search, entirely unlike humans, who solve layer by layer in roughly 4 to 20 moves per step.
The author encoded the human layer-by-layer solution steps as instructions and tested whether the decision-making AI Jev could make the right decisions accordingly—Jev solved it.
Early attempts fed the cube state directly to the model and had it output probabilities for every possible turn, failing badly; the key turned out to be data representation—describing the cube state clearly in natural language was what enabled the model to decide correctly.
The entire cube solution is integrated into the engine, with a WASM payload of about 200KB.

Why it matters

This experiment demonstrates the potential of decision-making AI to mimic human strategies on structured reasoning tasks: the issue is not model capability but how state is represented. For developers, the hard-won lesson—"translate the state into natural language"—is broadly applicable.

2026-09-22 ~ 2026-09-22 · 5 related posts

Primary sources

AI agent Jev solves a Rubik's cube layer-by-layer like a human — gdechichi · 2026-09-22 05:12 (UTC+08:00)
Encoding human layer-by-layer cube strategy for a decision-making AI — gdechichi · 2026-09-22 05:12 (UTC+08:00)
Making an AI Solve a Rubik's Cube Came Down to Describing State in Natural Language — gdechichi · 2026-09-22 05:12 (UTC+08:00)

Decision-Making AI Jev Solves Rubik's Cube Layer-by-Layer Like a Human — gdechichi · 2026-09-22
[source] AI agent Jev solves a Rubik's cube layer-by-layer like a human — gdechichi · 2026-09-22
[source] Making an AI Solve a Rubik's Cube Came Down to Describing State in Natural Language — gdechichi · 2026-09-22
The Rubik's-Solving Setup Ships Inside the Engine as a ~200KB WASM Payload — gdechichi · 2026-09-22
[source] Encoding human layer-by-layer cube strategy for a decision-making AI — gdechichi · 2026-09-22