On the river, with SPR ~0.35 and a marginal two pair, we should check and let SB bluff rather than jamming into a range that has us in bad shape.
Flop J55 rainbow, SPR ~3.3: our range has more overpairs and strong Jx, but SB’s limp-call range is still fairly strong. With 46s we have a weak backdoor flush draw and no showdown value; solver prefers checking this combo and mixing in small bets. The small c-bet is a reasonable mix, but checking is slightly higher EV.
Note: Small flop c-bet is fine, but solver prefers checking this combo more often.
Turn 5s pairs the board, SPR ~1.7: we now have 5x6x with a spade draw on a paired, rainbow board. Solver leans toward checking here, but a polarized strategy is reasonable. Betting around 60–70% pot is a good way to value-bet against Jx and fold out some weaker hands while still leaving room to check some bluffs and medium-strength hands.
River Qd, SPR ~0.35: we’re committed with ~16.6BB behind facing a pot of ~47.5BB. Solver wants us to check here and let SB bluff; jamming with 5x6x is dominated by Qx and strong Jx, and we don’t block missed spades. The shove is effectively a bluff, but our hand is too weak and doesn’t block enough natural bluffs.
Note: Jamming river with 5x6x is dominated by Qx and strong Jx; checking and letting SB bluff is higher EV.