polarized-range
RangeAliases: polarized, 极化范围, 两极化范围
A polarized range consists of very strong and very weak hands with no middle. It corresponds to large-size betting strategies.
A polarized range is a range that contains only "very strong" and "very weak" hands, with no middle strength. Polarization is the opposite of a "merged" range, which covers a continuous strength interval.
Detailed Explanation
Classic polarized-range examples:
- 3bet range: QQ+/AK (value) + A5s/K9s (bluffs). The middle (JJ, TT, AJs, KQs) flats instead of 3bets
- River large-size bet: nut value OR a selected blocker bluff
- Overbet range: extremely polarized — top-end value + the best bluff candidates
Polarized ranges correspond to large bet sizes, because:
- Large size makes mid-strength hands awkward: a 65% pot bet makes opponent's KQ tough to call; a 150% pot bet leaves only "call nuts or fold all"
- Maximizing value: your nut range collects more chips when called
- High bluff fold equity: large sizing increases the fold rate of opponent's bluff-catchers
Merged ranges are the opposite — covering a continuous strength interval (top pair + middle pair + bottom pair) and matched with small-size, high-frequency bets to extract value across the whole calling range.
How to read whether the opponent's range is polarized or merged:
- Large size → likely polarized
- Small size → likely merged
- Mixed frequencies → range somewhere between
Common Use Cases
- 3bet range design: skip the middle for cleaner postflop play
- River read against a big bet: assume the opponent is polarized, estimate the value:bluff ratio
- Decision-making: when OOP facing a polarized bet, your calling threshold is set by pot odds + your estimate of their bluff frequency
- GTO intuition training: solvers strongly prefer polarized strategies on big-bet streets