I don't seem to be able to select "hard" AI - is this just not implemented yet? It'd be nice to have a stronger AI, but I do realise that this is a lot easier said than done.

I've never seen the show so it took a bit to understand, but it's a pretty clever game!

It's kind of like Go, but you only have 4 pieces that you can move around the board to build walls between cells to mark territory.

Good implementation, and props to the show creators.

Maybe I am missing something but why are the walls colored by each player? At first I thought that I could go through my walls but not my opponents.

This is great! I love The Devil's Plan, I wish I could play all of the games. Some sort of in-person escape room-style experience re-enacting the games would be the best, but I have also thought about making multiplayer video game versions. Wall Go is a perfect candidate! Well done!

The AI seemed easy to me, I know the rules from watching the show and I won by a large margin first try.

I can see this being addictive! Would like a harder AI, though, it's not enough of a challenge.

What's the optimal strategy? I tried a few just for fun and found I got the highest score by taking all the corners to start, but I don't think it's a strategy which would work well against a better AI.

Looks like this is the AI's strategy: https://github.com/schaoss/wall-go/blob/6d5af58ffe9f4ce8e648... which is the opposite of mine. But I get more points!

Looks very cool and quite addictive as well, congrats.

Thanks for all the kind words and feedback! I’m the developer behind this project.

I totally agree — the current AI is still quite weak (even the “hard” mode isn’t available yet ). Right now it’s using a simple minimax + heuristic evaluation, but I’m actively working on a stronger version. If you’re curious about how it works or want to contribute ideas (or code!), feel free to check out the repo here: https://github.com/schaoss/wall-go

Also glad to hear some of you tried different strategies! I’ve seen players go for center control, corner traps, or aggressive sealing. It’s fascinating how this seemingly simple game offers so many tactical options.

Coming soon: • Better AI • 3/4 - player mode (yes, just like in the show!) • Maybe even online multiplayer, maybe

Thanks again for the encouragement — I didn’t expect this side project to gain traction, but it’s been a joy to build and share. Let me know what features you’d love to see next!

Today the "Hard" AI is ungrayed; but it seems significantly less intelligent than yesterday's "Medium" AI. The "Hard" AI likes to wall itself into 1x1 boxes almost regardless of the human's moves.

Hello HN, The AI just received a major logic upgrade — better evaluation function, tighter move selection. Still work-in-progress, but it’s a lot smarter than before. Try the latest build and let me know how it feels!