Q♠J♠ CO vs BB, river on Q♣ 9♦ 6♣ 2♠ A♦, 95 bb
The spot
- You: CO
- Opponent: BB
- Your hand: Q♠J♠
- Board: Q♣ 9♦ 6♣ 2♠ A♦
- Effective stack: 95 bb
- Pot: 22 bb
Population tendencies shape exploit windows in this high-EV branch.
Choose the strongest exploit-aware baseline.
See the answer
Best play: Check
Why
River, board Q-club 9-diamond 6-club 2-spade A-diamond. The ace arrived last, so the top board card is the ace. With Q-spade J-spade you hold only a pair of queens (second pair) with a jack kicker — a medium bluff‑catcher that beats bluffs and worse pairs but loses to every ace, two pair and set. Overbetting 120% as a polar line is wrong: it folds out everything you beat and is called only by hands that crush you. This medium showdown hand should check and try to win at showdown, not turn itself into a bluff with no blockers to the ace or club flush.
Key idea
A second pair on an ace-high river is a bluff‑catcher, not a value bet and not a clean bluff. Polar overbets need near-nuts or strong blockers plus no showdown value — a queen pair has neither.
Common mistake
Treating any pair as bettable and firing a polar overbet, which only folds worse and gets called by aces, two pair and sets that dominate the queen pair.