Flat pre, bet flop, call turn, and river is a mix between checking and small betting—jamming is fine but slightly lower EV.
Flop 8s5sQd, we have top pair with a spade draw in a multiway pot. Solver data is for heads-up, but the idea is similar: we can bet small or medium for value and protection, or check and let the field stab. Betting ~4.5BB into 8BB works well—SB calls, BB folds, and CO folds, so we go heads-up versus a capped SB range.
Turn Jh, SB leads 1BB into ~17.9BB; we’re getting ~18:1 and need only ~5% equity. With top pair + flush draw, calling is preferred—our hand is strong enough to continue but not strong enough to stack off versus a check-raise. Raising to ~14.5BB is a bit too big and polarizes us; solver prefers calling here and sometimes raising larger.
Note: Turn raise is unnecessarily large and polarizing; calling is higher EV with this combo.
River 4h, SPR ≈0.28, SB checks and we have ~13.3BB left. Solver prefers checking this combo often and mixing in some small bets; jamming is okay but slightly lower EV than checking. Our hand is strong enough to value-bet, but checking lets SB bluff and avoids getting snapped off by better hands.