JJ is strong enough to 3-bet and call a 4-bet, but postflop we should commit cleanly on the flop and avoid turning a solid overpair into a thin turn shove.
Flop Analysis
With an overpair, a shallow SPR (~1.3), and facing a small c-bet, the correct play with JJ is to shove rather than just call; we want to commit now and deny equity.
**Ranges:** After 4-bet / call, villain has many overpairs (QQ+/some KK/AA), AK/AQ including spade combos, and a few bluffs; JJ is close to the bottom of our made-hand region but still ahead of all unpaired AK/AQ and some bluffs. By calling, we let those overcard hands see turns cheaply instead of forcing them to pay or fold.
**Board:** Ten‑high two-tone with low cards is excellent for our exact hand — our overpair crushes villain’s unpaired overcards and their non-spade broadway bluffs, while villain’s true nutted region (sets/TT) is a small part of the 4-bet range.
**Math:** Pot is 62.2BB, villain bets 21.3BB, and we have 82BB behind; shoving realizes our equity fully and maximizes fold equity versus hands like AK with one spade that still have decent equity if allowed to see turns.
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> **Takeaway:** In 4-bet pots with a low SPR and an overpair, prefer jamming over flatting small bets so worse hands pay now and overcards don’t get free looks at turn cards.
Note: Calling the small flop c-bet with an overpair at SPR ~1.3 leaves room for awkward turns; shoving is higher EV and uses our equity and fold equity more efficiently.
Turn Analysis
Once the turn pairs the ten and villain checks, we should check back JJ; shoving overplays our hand and folds out the bluffs we want to keep while mostly getting called by better.
**Ranges:** The paired ten increases villain’s share of very strong hands (TT full, 55/22, slowplayed QQ+/AA) relative to our range, while many AK/AQ bluffs without a club now have less incentive to continue. Our overpair is now a strong but not premium bluff-catcher rather than a hand that wants to stack off versus a check.
**SPR & Position:** With SPR <1 and position, checking back keeps the pot manageable, allows us to realize our strong equity against villain’s checking range, and induces bluffs or thin value on rivers we can bluff-catch; shoving polarizes ourselves unnecessarily when our actual holding is mid-strength.
**Range Construction:** Solver wants our exact combo to be a pure check so that our turn checking range contains strong overpairs as well as traps; using JJ as a shove here leaves our check-back range too capped and makes us easy to play against on rivers.
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> **Takeaway:** In 4-bet pots on paired turns with shallow stacks, don’t auto-jam strong bluff-catchers versus checks — protect your checking range and let villains keep bluffing.
Note: Turn shove with JJ after villain checks turns a strong bluff-catcher into an overplayed value hand that mainly gets called by better and folds out the bluffs we beat.