[bdk3clash]

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I just checkraise the river. He's showing a lot of strength here on the turn, and 3x gaybets get everybody nervous.

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I totally don't understand why anyone would checkraise the river here given the turn action. Why shut out the BB from calling one bet the first time around? If you checkraise BB mostly folds and MP might 3-bet (in which case you probably lose, BTW.) If you lead out BB calls with made hands that he probably would fold with for two cold on the river and MP calls or raises, in which case you 3-bet and BB either calls or folds and MP calls (you win) or caps (you probably lose.)

I see way more bets going in when you're ahead by leading out than by checkraisisng this river given how you played the turn.

EDIT: Not to mention the chance that BB was drawing and MP, being passive, checks the river with his overpair or straight.