In a post on X, Riley Goodside showed Claude Fable 5 Max generating a solved 47-by-50 crossword built from the first 150 Pokémon, with Claude claiming the grid used 75 across entries, 75 down entries and 175 crossings. A few hours later, Goodside posted that ChatGPT 5.6 Sol Pro could fill the same crossword from an empty grid without numbered clues, then added that the puzzle appears to have 32 valid solutions.