River crossing puzzle 3

     problem statement

update 

Opus 4.5 did it by reasoning

ChatGPT non Think failed, Opus 4.5 fix it. ChatGPT Think led to Python gen and exe

Gemini 3 Pro did it by pure reasoning

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Why LLM may perform poorly with reasoning and planning

Code gen (Python)

code gen python A* search for ::River Crossing Puzzle ...

Python on colab

Use REACT to visualize the steps

JS

change to js

run js

use React to visualize the steps

ChatGPT 5 create BFS to solve it. 17 step solution, visualize, visualizer

ChatGPT BFS

ChatGPT BFS

If BFS option is trurned off, ChatGPT has a hard time doing it manually.