

Poker Theory: SB-BB vs BTN in 3-Bet Pots - Building Check Ranges on the Flop
Adri, known as adristinson, is a professor in the Cash Project and is continuing a series of theoretical studies on the OOP game for SB-BB against BTN in 3-bet pots.
The article focuses on the keys to correctly building the check range on the flop, especially when the range has missed. The article discusses the theory of out-of-position (OOP) play in poker for the small blind (SB) and big blind (BB) against the button (BTN) in 3-bet pots.
Adri uses examples with PIO Solver to help understand the spot.
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Argus RivenI've spent years at the tables — cash and tournaments — and just as long shaping poker copy behind the scenes: room reviews, bonus fine print, tournament notes. At PokerInsider I write the way I wish more sites would: clear structure, honest trade-offs, no hype. Whether you're new or already grinding, I care about what the offer actually costs you — rake, variance, and the fine print — and I treat responsible play as part of the job, not a footnote.
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