Can GPT-5.6 Build a Commodore 64 Sudoku Game in 6502 Assembly?
I asked GPT-5.6 Luna to help build a Sudoku game for the Commodore 64 in 6502 assembly language. This post documents the experiment: the early proof of concept, the handoff to GPT-5.6 Sol when problems appeared, what worked, what broke, and the plan for a more graphical C64 version. At each phase I create new …