Optimal bet sizing strategies

• Price control: Your size sets the price for draws and bluff catchers.
• Range clarity: Different sizes map to different range shapes. Opponents read you if you are inconsistent.
• Fold equity: Bigger sizes require more folds. Smaller sizes allow higher frequency pressure.
• Pot growth: Correct sizing builds a pot when you plan three streets with strong value.

• Small 25 to 40 percent pot: Range bets on dry boards, thin value, cheap denial, probe bets after checks. Works best when you have range advantage and board is static.
• Medium 50 to 70 percent pot: Standard value on semi wet boards, pressure on one pair hands, charging most draws.
• Large 75 to 100 percent pot: Polarized spots with many strong hands and strong bluffs with blockers. Useful on dynamic boards and on rivers when you hold nut advantage.
• Overbet 125 to 200 percent pot or more: Strong nut advantage and capped opponent range. Clear story that your range contains many nutted hands and their range does not.
• Block bet 10 to 25 percent pot: River control with medium strength. Induces raises from polarized opponents, denies cheap bluffs from others. Use carefully and mix checks to avoid being exploited.

• Polarized range: Strong value and bluffs. Few medium strength hands. Prefer large and overbet sizes that pressure bluff catchers.
• Merged range: Many medium strength hands that beat calls from wide ranges. Prefer small to medium sizes at higher frequency.
• Rule: Bigger size when your story is strong or air. Smaller size when betting wide with many medium winners.

Choose size by who connects better with the board and who holds more nut combinations.

• Range advantage: Your range has more top pair plus and strong draws. Use small to medium sizes at higher frequency.
• Nut advantage: You hold more sets, straights, or flushes. Use big sizes and overbets to stretch their bluff catchers.
• No advantage: Reduce frequency and choose sizes that target specific mistakes in your opponent pool.

• Dry high card boards A72 rainbow or K55: Small c-bets at high frequency. Easy thin value and cheap bluffs.
• Wet connected boards 987 two tone or 654: Fewer bluffs and larger sizes with strong value and strong semi bluffs.
• Paired boards KK5 or 883: Sizes often polarize. Use large sizes when you have trips advantage, small when stabbing wide.
• Monotone boards three of a suit: Small stabs are common. Large sizes represent high flushes and strong blockers. Your highest suit card guides aggression.

• In position: Bet thinner and size more precisely. You control future streets.
• Out of position: Reduce frequency, use clearer sizes. Protect checks with some strong hands.
• Multiway pots: Use larger sizes for value on wet boards. Cut pure bluffs. Choose clear equity semi bluffs only. Thin value becomes risky.

• Low SPR up to 3: Pot committed with top pair strong kicker or better. One or two big bets decide the hand. Size larger with value and strong draws.
• Medium SPR 4 to 8: Plan two streets with value. Mix sizes by turn card quality.
• High SPR 9 plus: Three street plans. Start small to keep ranges wide then escalate on later streets where ranges narrow.

Roadmap example: With strong value on a safe board go small on the flop, medium on the turn, large on the river. With thin value choose one or two streets with smaller sizes.

• Required folds for a bluff: Bet B into pot P. Breakeven fold percentage = B ÷ (P + B).
• Minimum defense frequency for the caller: MDF = P ÷ (P + B).

Quick reference

• 33 percent pot bet needs about 25 percent folds. MDF about 75 percent.
• 50 percent pot bet needs about 33 percent folds. MDF about 67 percent.
• 100 percent pot bet needs about 50 percent folds. MDF about 50 percent.
• 150 percent pot bet needs about 60 percent folds. MDF about 40 percent.

On the river with a polarized range the optimal bluff to value ratio links to size. Bluff share of bets equals B ÷ (P + B). Ratio bluffs to value equals B ÷ P. Use this only as a baseline and adjust exploitatively.

• Flop: Small on dry boards when you have range advantage. Larger when the board is dynamic and you hold strong value or strong equity.
• Turn: Size up on cards that improve your range or weaken theirs. Downsize or check on cards that improve their range. Use block sizes to set cheap river prices with medium strength.
• River: Polarize. Use large or overbet when you have nut advantage or strong blockers. Use smaller sizes for thin value when many worse hands can call.

• Open sizes: 2 to 2.5x in late position, 2.5 to 3x early position. Add rake and table tendencies as inputs.
• Isolation raises: 3x to 4x plus 1x per limper. Go larger out of position.
• 3-bet sizing: In position about 3x the open. Out of position about 3.5x to 4x. Increase against callers.
• 4-bet sizing: In position about 2.2x to 2.5x the 3-bet. Out of position about 2.5x to 2.8x. Leave room to fold when bluffing in position.

In 3-bet and 4-bet pots stack to pot ratio is low, so postflop uses many small flop bets and clear commit decisions by the turn.

• You have nut advantage and your opponent is capped. Example CO calls BB 3-bet on K72r and turn A completes more two pair for BB than for CO.
• The runout removes medium strength hands from your range and leaves strong value plus bluffs with key blockers.
• You target bluff catchers that rarely raise. Overbet forces maximum indifference.

Do not overbet on textures that smash their range or when your story lacks enough nut combos.

• Probe bet: After aggressor checks previous street, 25 to 50 percent sizes test capped ranges.
• Donk bet: Out of position leads when board favors the caller. Use medium sizes with strong value and equity. Mix small to attack missed range bets.
• Block bet river: 15 to 30 percent sets price with medium strength that hates facing a large bet. Mix check calls and check folds to avoid being raised off too easily.

• Versus calling stations: Use larger sizes for value on all streets. Reduce pure bluffs. Keep sizing simple and repeatable.
• Versus nits: Use smaller sizes with thin value, bigger sizes with bluffs on scare cards. They overfold to pressure.
• Versus maniacs: Let them bet. When you bet, choose sizes they call with worse. Avoid giant bluffs without strong blockers.
• Population reads: If overbets are under bluffed in your games, fold more bluff catchers to those. If min raises on later streets are strong, size for value earlier and fold marginal hands to the raise.

• BTN raises, BB calls. Flop A72 rainbow: BTN small c-bet 25 to 33 percent with high frequency. Turn bricks 2. Size up 60 to 75 percent with Ax and strong bluffs. River K. Polarize to 75 to 100 percent or overbet with nut advantage.
• CO opens, BTN calls. Flop 986 two tone: CO reduces c-bet frequency. Use 60 to 75 percent with sets and strong draws. Many hands check and continue versus bets rather than betting small and getting raised.
• 3-bet pot. IP vs OOP. Flop KQ3 rainbow: Small 25 to 33 percent is efficient. Turn T brings many strong hands. Size up or overbet with nut advantage and blocker bluffs.
• River block bet: You hold second pair on K7442 after missed draws. Block 20 to 30 percent to avoid facing a pot sized bluff and to get thin value from worse pairs and Ace high.

• Same size every street regardless of board or range shape.
• Large size on boards where you lack nut advantage.
• Small size with very strong value on wet textures that need protection.
• Overbetting without enough nut combos.
• Block betting and auto folding to every raise. Mix check calls to protect the line.

• Small size for range bets and thin value on dry boards.
• Medium size to charge draws and value target one pair ranges.
• Large and overbet when you have nut advantage and a polarized story.
• Match size to range shape. Polarized uses big. Merged uses small to medium.
• Use SPR to plan streets. Low SPR commit earlier. High SPR build across streets.
• Bluff folds needed equals bet divided by pot plus bet. MDF equals pot divided by pot plus bet.
• Exploit pool tendencies. Bigger value versus callers. Smaller thin value versus folders.

Choose sizes with intent, tell a consistent story, and plan the whole hand. Optimal bet sizing turns good cards into big pots and turns air into profitable folds.