PokerSolver
PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/HJ vs BTN 4-bet 20.7bb

HJ vs BTN 4-bet 20.7bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · HJ limps, BTN isolates to 3bb, HJ 3-bets to 9bb, BTN 4-bets to 20.7bb · Hijack to act

5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 32bbYour cards?
9bb
20.7bb
0.5bb
1bb

Tap your two cards.

Hijack's range

224 of 1,326 combos get here
Fold 52.9%Call 30.7%All-in 99.84bb 16.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the hijack (HJ) when HJ limps, BTN isolates to 3bb, HJ 3-bets to 9bb, BTN 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

HJ limps, BTN isolates to 3bb, HJ 3-bets to 9bb, BTN 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the hijack (HJ) folds 52.9%, calls 30.7% and goes all-in 99.84bb 16.4%. Always call: 55-JJ, AQs. Always all-in 99.84bb: KK+, AKs, AKo. Mixed: QQ, ATs, A7s-A8s, A3s-A5s, KJs, QJs, T9s.

Always fold
A6s, K9s, Q9s, AQo, KQo, QJo
Always call
55-JJ, AQs
Always all-in 99.84bb
KK+, AKs, AKo
Mixed
QQ, ATs, A7s-A8s, A3s-A5s, KJs, QJs, T9s
Settings: 5-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 23.9). 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.