FREE POKER TRAINING · BUILT ON THE MATHS

Better decisions.
Sharper poker.

Read the range. Price the call. Find your leaks. A free poker trainer that shows you what every decision costs in big blinds.

Today’s five-spot challenge → · Help shape the next update

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YOUR NEXT SESSION

Pick a way to sharpen your game.

Start with a guided lesson ↗

Drill

repeat

Spot after spot, graded the only way that matters: in chips. Call or fold against a stated range, or read your equity from the felt and find out how far off you were. Every answer is computed live: no charts, nothing memorised, nothing you can't check.

Train decisions ↗

Play

exploit

Sit down against a table of deliberately flawed opponents. The Nit folds too much. The Station never folds at all. Beating them is not about playing perfectly, it is about noticing what they do too often and charging them for it.

Take a seat ↗

Leaks

improve

Every mistake gets logged with a price tag. Overfolding, overcalling, misreading equity: ranked by what each one actually costs you per hand. Fix the top line and you have found more money than any chart will ever give you.

Review your leaks ↗
THE STUDY DESK

Bring a question. Check the working.

// know your table

Four opponents. Four different mistakes to punish.

Practise spotting tendencies against four stated opponent models. Their ranges are assumptions you can inspect, and the coach shows how those assumptions change a decision.

The Nit

Folds until the nuts arrive

Bets only premium made hands and gives up everywhere else. Against a range this tight your bluffs print and your medium hands are worthless, so attack the pots nobody wants and fold when they finally fight back.

The Calling Station

Never met a pair worth folding

Calls with any piece and almost never folds. Bluffing is lighting money on fire; the entire edge is value betting thinner and more often than feels comfortable.

The Maniac

Aggression as a personality

Bets and raises with everything, so the betting tells you almost nothing. Stop folding good-but-not-great hands and let them bluff into you: patience is the counter, not counter-aggression.

The Reg

Solid, balanced, unbothered

A competent, roughly balanced range with real bluffs and real value. There is no free money here: this one is about not making mistakes rather than punishing theirs.

// solved, not remembered

Push/fold charts, 2 to 25 bb: heads-up, 6-max, 9-max.

Study computed shove-or-fold ranges: heads-up, and every seat at a 6-max and 9-max table with a big-blind ante. The multiway charts use a simplified model; each page states its assumptions. Every depth gets the ranges, copyable range text and the EV of all 169 hands against folding, from the same tables the trainer grades you with.

See every depth →6-max9-maxICM bubbleHU 5 bbHU 10 bbHU 15 bbHU 20 bb

// 169 hands, one page each

Every starting hand, computed.

Each of the 169 starting hands gets its all-in equity against every other hand and against the four opponents, and its solved push/fold answer at every stack from 2 to 25 bb, heads-up, 6-max and 9-max. Ranked, sortable, and every number checkable.

All 169 hands →AKoAJoKQs22T9s72o

// every board, not a sample

AK vs QQ is not a coin flip.

Exact all-in odds for the matchups that come up every session, counted over all 1,712,304 boards for every way the suits can fall, with how each hand wins and when calling as the underdog is right.

All matchups →AKo vs QQAA vs KKKK vs AKoAKo vs 22AKo vs AQo

// equity calculator

Three hands all in? Every board, dealt.

An equity calculator for up to nine hands, with a board and dead cards. It enumerates every run-out instead of sampling, so there is no error bar, and it shows which turn or river card hands the pot to whom.

Open the calculator →AA vs KK vs QQAKo vs QQ vs JJSet vs two draws

// ICM calculator

On the bubble, a 47.9% call needs 71.6%.

Stacks and payouts in; every finishing probability and prize equity out, summed exactly. Then the equity a call needs once chips stop being money, next to the chip-EV price, and the hands that still clear it.

Open the ICM calculator →Second stack calls the chip leaderSecond stack facing a shove, four equal seatsMiddle stack calls the chip leader

// counted, not quoted

The rule of 4 calls 15 outs 60%. It is 54.1%.

The poker odds chart, every number counted by dealing every card: draws by outs, flopping a set or a flush, someone holding aces. Each page prints its formula with the numbers in.

The odds chart →Someone holding a bigger pairFlopping a setFlush draw (9 outs)The rule of 2 and 4, checked

// the price of a call

A pot-sized turn bet asks for 33.3%. A flush draw has 19.6%.

Pot odds, minimum defence frequency, how often a bluff has to work and the river value-to-bluff ratio, as exact fractions for every bet size from a quarter pot to three times the pot, plus the implied odds each draw needs when the price falls short.

Pot odds calculator →Minimum defence frequencyBluff-to-value ratioImplied odds

// combinatorics

Hold one ace and AA drops from 6 combos to 3; AK from 16 to 12.

Count what a range really holds once the board and your cards are out of the deck: sets, two pair, top pair and draws on any flop, with ten common flops counted for all four opponents side by side.

Combos counter →Blockers1,326 starting handsA♠ 7♦ 2♣, counted

// hand rankings, counted

By the river, two pair (23.5%) is more common than no pair (17.4%).

The ten poker hands, best first, with the exact odds of each in five, six and seven cards: every one of the 133,784,560 seven-card hands classified by the engine. Plus a checker that settles who wins a showdown.

Poker hand rankings →Who wins? Hand checkerRoyal flush odds

// settle the thread

Was this call right? Paste the spot, get the arithmetic.

Your hand, the board, the bet and villain’s range in; equity, the break-even price and the EV of calling in big blinds out, every step shown. The whole spot lives in the URL, so the link you paste into a hand-review thread is the answer.

Check a spot →Flush draw vs overpairRiver bluff-catcherAK vs a nit’s shove

// why you can trust the numbers

The engine underneath is written in Rust and compiled to WebAssembly: about 75 KB that runs entirely on your machine. It evaluates poker hands from scratch and samples tens of thousands of runouts per question, which takes a couple of milliseconds.

It was checked the boring way: fuzzed against a deliberately naive reference implementation over 400,000 hands with zero disagreements, and confirmed to reproduce the equities every calculator agrees on: aces against kings comes back at 81.946%.

Nothing in the trainer is a chart we typed in and hoped you would not check. If you disagree with an answer, the exact range it was computed against is on screen.

Built by the same people as 0xRoulette, where the same idea gets pointed at a game you genuinely cannot beat.

BEFORE YOU SIT DOWN

Poker practice, explained.

Can I practise poker here for free?

Yes. Push/fold drills, call/fold decisions, equity practice and games against two to six players are free. No account or download is required. Every game uses play money.

Is this a GTO poker solver?

The heads-up push/fold trainer uses computed equilibrium tables. Full-table opponents use stated archetype ranges and behavioural rules. Its coach is a training aid, not a solved multiway strategy. Inspect the opponent assumptions.

Where does my practice history go?

Decision accuracy, streaks and leak totals are saved in this browser. They are not synced between devices. You can clear them from the Leaks tab.

What should I study first?

Start with hand rankings and pot odds, then try call/fold drills. Use the full-table game to practise reading opponents, and review your largest leaks after each session.

The maths is free. The edge is yours to take.

No account, no download, no real money. Open the trainer and start.

Start training (free) →