GPT-6.1 Terra (max) solved level 13 on a 3×3 in 77 moves

What the model saw

Each picture is the exact image the model was sent; highlighted: start.

startafter turn 1 · 9 movesafter turn 2 · 13 movesafter turn 3 · 21 movesafter turn 4 · 31 movesafter turn 5 · 40 movesafter turn 6 · 47 movesafter turn 7 · 53 movesafter turn 8 · 61 movesafter turn 9 · 70 movesafter turn 10 · 77 moves