SB 3-Bet vs UTG 4-Bet
UTG 4-bet to 19.8 bb. Jam or call with the top of your 3-bet range; fold the bluffs.
Hands at a glance
All-in (47% of hands)
Always: AA, AKs, KK. Sometimes: A5s (20%), AKo (60%), QQ (40%).
Call (25% of hands)
Sometimes: AQs (40%), AKo (40%), QQ (60%), JJ (50%), TT (20%).
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 an Under the Gun open from the Small Blind, and Under the Gun 4-bets. Your 3-betting range here is 4% of all starting hands (the colored squares). Go all-in with 47% of it, call 25% and fold the other 28%.
Against an Under the Gun 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 UTG: the HJ folds 12%, the CO folds 12%, the BTN folds 15%, the BB folds 11%.
Related charts: SB vs UTG Open, UTG Open vs SB 3-Bet, UTG Open Range.