> Katago (almost certainly significantly stronger than AlphaGo)

Interesting KataGo is an open sourced Go program written primarily by David Wu in C++ and recently heavily vibe coded by Claude. It's running on four Nvidia RTX-3090 GPUs with 96GB VRAM. [1]

[1] https://github.com/lightvector/KataGo

I had to read your comment five times thinking "how it is written in C++ if it's a go program?" Do'h!

It significantly predates Claude, and has been one of, if not the best engine in the world for many years.