PokerSolver
PokerSolver/6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/UTG vs BTN 4-bet 20.7bb

UTG vs BTN 4-bet 20.7bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · UTG limps, BTN isolates to 3bb, UTG 3-bets to 9bb, BTN 4-bets to 20.7bb · Under the gun to act

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 32.16bbYour cards?
9bb
20.7bb
0.5bb
1bb

Tap your two cards.

Under the gun's range

220 of 1,326 combos get here
Fold 65.1%Call 16.2%All-in 79.84bb 18.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the under the gun (UTG) when UTG limps, BTN isolates to 3bb, UTG 3-bets to 9bb, BTN 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

UTG limps, BTN isolates to 3bb, UTG 3-bets to 9bb, BTN 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the under the gun (UTG) folds 65.1%, calls 16.2% and goes all-in 79.84bb 18.7%. Always call: ATs-AQs. Always all-in 79.84bb: KK, AKo. Mixed: AA, QQ, TT, 77-88, AKs, A9s, A7s, A4s-A5s, 76s, 65s, AQo.

Always fold
KQs, K9s-KTs, Q9s+, JTs, 98s, 87s, KJo+
Always call
ATs-AQs
Always all-in 79.84bb
KK, AKo
Mixed
AA, QQ, TT, 77-88, AKs, A9s, A7s, A4s-A5s, 76s, 65s, AQo
Settings: 6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.92). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.