K♦9♦ BB vs BTN, turn on T♠ 7♠ 2♣ 4♦, 85 bb
The spot
- You: BB
- Opponent: BTN
- Your hand: K♦9♦
- Board: T♠ 7♠ 2♣ 4♦
- Effective stack: 85 bb
- Pot: 12 bb
HU postflop line reaches a high-frequency adaptation node.
Best postflop adaptation line?
See the answer
Best play: Check
Why
Board T♠7♠2♣ 4♦: the 4 turn is a low blank that changes little — on this monotone-flush-flop-turned-rainbow runout the BTN keeps a range edge with T-x and overpairs, and the BB stays uncapped only with a few sets and two-pair. Your K♦9♦ is just king-high with no pair, no flush draw (the 4♦ gives only a backdoor), and at most an overcard plus a runner-runner straight. OOP facing the turn bet, you check rather than donk: with no made hand and no real draw you have no profitable bet, so you check to give up cheaply or bluff‑catch only the rivers that improve you, conceding that even HU-wide ranges out-equity raw king-high here.
Key idea
With pure king-high and no draw OOP, a low blank turn is a check — you have nothing to bet for and nothing to protect.
Common mistake
Donk-betting or raising stone king-high on a dry low turn, spewing chips against a BTN range that easily continues.