MCTS doesn't build the whole tree — it builds it interactively while searching. Selection, expansion, evaluation, backup: these four steps run hundreds or thousands of times per move, concentrating compute on the branches that matter.
Where this was said
At 14:28 · chapter starts 8:17
Eric walks through the UCB1 bandit algorithm and AlphaGo's PUCT variant — how visit counts, Q-values, and prior probabilities are balanced to explore and exploit.
A 19x19 Go board generates a game tree larger than atoms in the universe — 361 to the power of 300. This isn't just big, it's a fundamentally different class of problem from chess, which is why computer scientists thought Go was unsolvable this century.
A 19x19 Go board has roughly 361 possible moves per turn over ~300 moves, producing a game tree larger than the number of atoms in the universe.
AlphaGo's neural network does two things: predict who's going to win (value head), and predict which moves are worth trying (policy head). Train this on human expert games and you already get a very strong Go player before any search.
Game apps keep users engaged long enough for ads to pay off. Tool apps don't — so if you're building a utility, ads are almost always the wrong call and subscriptions are your only real lever.
Inside SEO Bot, a single button labelled 'Boost My Domain Rating' routes users directly to Listing Bot. That one interaction converts a user of one tool into a user of two — without any marketing cost.
Directory listings are a powerful but underrated growth channel — but only if your product is genuinely interesting enough to earn the click. AI products have a natural advantage here because they're easy to package in a compelling, clickable way.
The fastest path to Twitter growth isn't volume — it's forming sharp opinions about how the platform works and sharing them immediately. People cluster around those who understand the rules and say so out loud.
Sam had no coding knowledge, so he used ChatGPT voice mode to generate his entire codebase and copy-pasted it into Notepad. A friend later introduced him to Cursor, and he never looked back.
Copy days of Discord chat history, paste it into ChatGPT, and ask it to list recurring pain points. The ones that come up most often are your best product bets.
Sam's top advice: when prompting Cursor, tell it to architect code for 100,000 users from day one. The AI changes its approach, building scalable frameworks instead of brittle one-user code.
With AI coding tools like Cursor, Bhanu replicates an existing free tool for a new keyword in under 5 minutes. What used to be a multi-day build is now a lunch-break task.
Ahrefs, SiteGPT, Cal.com, PostHog, Datafast, Sibyl AI, Bento, Feather, Featurepace, Mintlify, Cloud Code, ChartMogul — Bhanu runs his entire business solo with these 12 tools.
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