Flop Check-Back Protection: Why the Aggressor Cannot Always C-Bet

Short Answer
The flop aggressor cannot put only weak hands into the check-back range. If all strong hands bet, the check-back range becomes capped and the defender can attack later streets.
What Needs Protection
The check-back range needs some hands that can call turns, some medium-strength hands that realize equity, and some backdoor-equity combos. Then the defender cannot treat every check as surrender.
Good Check-Back Hands
Weak top pair, medium pairs, some slowplays, ace-high with backdoors, and non-robust equity that dislikes facing raises can all check back.
Decision Steps
- Ask whether betting makes your check range too weak.
- Keep some strong hands in the check range.
- Select medium hands that can continue on turns.
- Do not leave only no-equity air in checks.