BTN 3-Bet vs HJ 4-Bet
HJ 4-bet to 18.8 bb. Jam or call with the top of your 3-bet range; fold the bluffs.
Hands at a glance
All-in (51% of hands)
Always: AA, AKs, KK. Sometimes: A5s (20%), AKo (60%), QQ (40%).
Call (20% of hands)
Sometimes: AQs (40%), AKo (40%), QQ (60%), JJ (50%).
Each square is a starting hand: pairs on the diagonal, suited hands above it, offsuit below. A square split in two colors is a mix: play it each way that often.
How to play it
You 3-bet a Hijack open from the Button, and the Hijack 4-bets. Your 3-betting range here is 4% of all starting hands (the colored squares). Go all-in with 51% of it, call 20% and fold the other 28%.
Against a Hijack open your 3-bet range is mostly strong hands, so most of it continues against a 4-bet.
Facing the same 4-bet from the HJ: the CO folds 19%, the SB folds 53%, the BB folds 25%.
Related charts: BTN vs HJ Open, HJ Open vs BTN 3-Bet, HJ Open Range.