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Practice against an AI clone of a real poker player

There's one player in your game you can't beat — you know it the moment they sit down. Master Poker's Rival Clone builds an AI that plays like them, from their own hands, so you can drill against that exact opponent any time you like. Here's how it works.

What a Rival Clone actually is

Most poker AI is a solver — it computes how to play optimally, the same way against everyone. Your friend doesn't play a solver's ranges; they play their ranges — the hands they open, the sizes they bet, the spots they can't fold, the bluffs they love.

A Rival Clone is the opposite of a solver. It's an imitation: point Master Poker at a rival's real hand history — games you've played with them on Master Poker, or a PokerNow / n8 log you import — and it trains a model that reproduces that individual's style. Not "a good player." Them.

How it learns a person (without seeing their cards)

The hard part of cloning a real player is that you rarely know what they held. In a real game you only see a rival's cards when they show at the end of a hand — never when they fold. Naïvely trained, an AI would conclude "this player never folds" simply because every hand it can learn from is one they didn't fold. That's a trap, and Master Poker is built specifically to avoid it:

• Fold-or-continue decisions are learned from what's always visible — the board, the action so far, the bet you're facing, the price you're getting. No card leakage.
• Aggression — when they choose to bet or raise rather than call — is learned from the hands that did reach showdown, where their cards are known.
• Their real fold tendencies come from how tight or loose they actually were: a nit folds their junk, a calling station doesn't — and the clone reproduces that person's rate, not a generic one.

The result plays the way the real player does in the spots that matter: it 3-bets you light if they do, it over-folds to aggression if they do, it won't lay down top pair if they never would.

Building your first clone

1. Get their hands in. Play games with them on Master Poker, or import a PokerNow / n8 session where they were at the table. You need at least 500 hands of that rival; more sharpens it.
2. Pick the rival. On the Rival Clones screen, choose an opponent with enough hands and hit Build a clone. Master Poker maps their alt-IDs to one person and trains the model.
3. Read the fidelity score. When it's done, you get a fidelity number — how closely the clone's decisions match the real player's on held-out hands it never trained on.
4. Sit down and drill. Open the practice table: a private, 4-handed game of you against three copies of them. Pick the stake, play as long as you like.

What the fidelity score means

Fidelity answers one question: how much does this clone play like the real person? It's measured on hands the model never saw during training, across a few axes — does it enter pots at the same rate, size its bets like they do, and get its aggressive/passive decisions right. A higher score means a closer impression; a lower one usually just means "feed me more of their hands."

It is an honest number, not a marketing one. It can even drop when you add hands — that's the score re-scoring itself against a harder, larger sample, which is exactly what you want from a metric you can trust.

Using it to actually improve

• Rehearse the matchup. Play a hundred hands against the clone before your next real session. You'll stop being surprised by their favourite moves.
• Test a counter-strategy safely. Want to see what happens if you 4-bet them wider, or stop paying off their river bets? Try it against the clone, where it costs play chips, not money.
• Find the leak they exploit in you. The spots the clone keeps winning are the spots the real player keeps winning — go study those hands in your analysis dashboard.

FAQ

How many hands do you need to build a clone?

At least 500 hands of that rival — that's the minimum to build. A thousand or more sharpens the read; past the floor, the clone simply gets closer to the real person the more of their history you import.

Does the clone see my hole cards?

No. It decides from public information only — the board, the action, the sizes — exactly like a real opponent across the table who can't see your hand. That's a deliberate design choice, not a limitation.

Does practising against a clone mess up my real stats?

Never. Practice tables are a separate, play-chips-only mode for study. They don't touch your real games, your history, or your analysis.

Can I clone myself?

No — Rival Clones are for studying opponents. Your own identity is marked "you" and kept out of the clone list, so the feature stays pointed at the rivals you actually face. (To study your own game, use your analysis dashboard — your HUD stats, leaks and hand replays live there.)