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Decision Island3D Texas Hold'em decision map

How to Explore

Explore Decision Island in three steps

Decision Island organises the 49 decisions you face most in No-Limit Hold'em into 12 themed islands. No formulas to memorise: pick up the key numbers as you explore.

  1. 1

    Tap an island

    See every decision in that theme, numbered ①②③ on the map.

  2. 2

    Tap a building or its number

    Open its card with the key numbers and the street where it matters.

  3. 3

    Turn on Links

    Little people carry charts, chips and cards between themes. Tap one to see what feeds what.

Decision Themes

12 decision islands

Each island is a decision theme, and each building on it is a decision with its key numbers. The numbers are common reference values for 6-max with 100 BB stacks. In real games, adjust for your opponents and the game structure.

01

Position

位置

The later you act, the more you know, and the wider you can play.

  • Open widest on the buttonThe button opens about 40–45% of hands
  • Tighten up early6-max early position opens about 15–18%
  • Defend the big blindFacing a 2.5 BB open you need about 27% equity
  • Call more in positionIn position you often realize 100%+ of your equity
  • Steal the blindsThere are 1.5 BB of dead money in the blinds
02

Starting Hands

起手牌

Good starting hands are about what they can become, not just how high they are.

  • Set mining with pocket pairsFlops a set about 11.8% of the time (1 in 8.5)
  • Suited connectorsSuited hands are about 23.5% of all starting hands
  • Big cards like AKPairs at least one card on the flop about 32%
  • Beware dominated handsDominated hands usually have under 30%
03

3-Bets

3-bet

A re-raise can build value or apply pressure; size it by position.

  • 3-bet for valueIn position, about 3× the open
  • Bluff with blockersHolding an ace cuts AA from 6 combos to 3
  • Facing a 3-betA typical 4-bet is 2.2–2.5× the 3-bet
  • Small blind: 3-bet or foldA common small-blind 3-bet is 4–4.5×
04

Pot Odds

底池賠率

Turn the bet into a required equity and the call decides itself.

  • Calling half potCalling half pot needs 25% equity
  • Calling a pot-size betCalling a pot-size bet needs 33% equity
  • The rule of 4 and 2A flush draw (9 outs) is about 35% from flop to river
  • Implied oddsA flush draw on the turn is only about 19.6%
05

Bet Sizing

下注尺度

Size depends on the board and on which hands you want to call.

  • Bigger bets on wet boardsCommonly 2/3 pot to full pot
  • Small bets on dry boardsA common continuation bet is 1/3 pot
  • OverbetsA 1.5× pot bet asks for 37.5% equity
  • Thin value on the riverYou need over 50% against the calling range
06

Bluffing

詐唬

Bluff with a ratio, a reason, and a sense of when to stop.

  • Bluff-to-value ratioAt pot size, bluffs make up about 33%
  • Semi-bluffsA flush draw has about 35% equity on the flop
  • BlockersHolding a king cuts KK from 6 combos to 3
  • Knowing when to give upBluff less against players with VPIP over 40%
07

Ranges

讀牌範圍

Your opponent holds not one hand but a whole range.

  • Think in rangesThere are 1,326 possible starting combos
  • Follow the storyOpening ranges are usually 15–45% of all hands
  • Minimum defense frequencyDefend at least 67% against a half-pot bet
  • Polarized vs. mergedPolarized ranges often bet 75% pot or more
08

Board Texture

牌面結構

The same hand is worth different amounts on different boards.

  • Dry boardsContinuation-bet frequency often exceeds 70%
  • Wet boardsContinuation-bet frequency often drops below 50%
  • Paired boardsOnly 2 sevens remain
  • Nut advantageCompare the top 5% of each range
09

Stack Depth

籌碼深度

Stack depth decides how much risk you can take.

  • Stack-to-pot ratioBelow SPR 3, top pair is often happy to get all in
  • Short stack: shove or foldA common threshold is about 10–15 BB
  • Deep stacks100 BB is the standard cash-game depth
  • CommitmentAfter about 33% of your stack is in, you are usually committed
10

Tournaments

錦標賽

Chips are not prize money; survival has value too.

  • ICM pressureOn the bubble, calling an all-in often needs 55–65% equity
  • The bubbleUsually about 10–15% of players get paid
  • Use the big stack2× the average stack or more counts as big
  • The final tableAt a 9-player final table, every bust is a pay jump
11

Opponents

對手類型

Read their habits, then adjust your bets and bluffs.

  • Calling stationsVPIP is often above 40%
  • Tight, passive playersVPIP is often under 15%
  • Loose-aggressive playersVPIP is often above 30%
  • Reading the numbersWait for at least 300 hands before judging
12

Mind & Bankroll

心態資金

Good decisions need a steady mind and enough bankroll.

  • Handling tiltTake 3 deep breaths before acting
  • Bankroll managementCash games: 20–40 buy-ins
  • Stop-loss and breaksA common stop-loss is 3 buy-ins
  • Reviewing handsReview 3–5 key hands each session

Links

How the decisions connect

Turn on the links on the map and little figures carry range charts, chips and cards between the themes. Here is the idea behind each link.

  • PositionStarting HandsSolid theory

    Your seat decides how wide you can open.

  • Pot OddsBluffingSolid theory

    The equity a call needs and the folds a bluff needs come from the same formula.

  • Board TextureBet SizingSolid theory

    Dry boards favour small bets; wet boards favour big bets or checks.

  • RangesBluffingRule of thumb

    Knowing what their range lacks tells you which hands to bluff with.

  • Stack DepthTournamentsSolid theory

    Short-stack shove-or-fold gets extra ICM pressure on the bubble.

  • Starting Hands3-BetsSolid theory

    Suited small aces carry blockers and are common 3-bet bluffs.

  • OpponentsBet SizingDepends on the opponent

    Against calling stations, bet bigger for value and bluff less; how much depends on the player.

  • Mind & BankrollRangesRule of thumb

    Every review sharpens your read on ranges.

  • TournamentsMind & BankrollRule of thumb

    Tournament swings call for a deeper bankroll and a steadier mind.

FAQ

FAQ

What is Decision Island?

Decision Island is an interactive 3D decision map that sorts 49 common No-Limit Hold'em decisions into 12 themed islands (Position, Starting Hands, 3-Bets, Pot Odds, Bet Sizing, Bluffing, Ranges, Board Texture, Stack Depth, Tournaments, Opponents, Mind & Bankroll). Tap an island to see every decision in that theme, then tap a building to open its decision card with the key numbers and the street where it comes up.

Do I need to download anything or sign up?

No. It opens straight in your browser with no login. The map uses WebGL 3D graphics, so a recent phone or computer browser works best. Tap "Full screen" for a better view.

Where do the numbers on the map come from?

They are common reference values for 6-max No-Limit Hold'em with 100 BB effective stacks. In real games you adjust for your opponents and the game structure. The links between themes also show how solid they are: solid theory, rule of thumb, or depends on the opponent.

Is there a Chinese version?

Yes. Tap "中文" in the toolbar at the top left of the map to switch to Chinese, and tap "EN" to switch back.

Is Decision Island good for beginners?

Yes. Start with our Texas Hold'em rules guide and poker hand rankings, then explore the Position and Starting Hands islands first, alongside our beginner strategy and starting hand chart.

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