PokerSolver
PokerSolver/6-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs SB 4-bet 18.4bb

BTN vs SB 4-bet 18.4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · BTN limps, SB isolates to 4bb, BTN 3-bets to 8bb, SB 4-bets to 18.4bb · Button to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
6-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 28.36bbYour cards?
8bb
18.4bb
1bb

Tap your two cards.

Button's range

84 of 1,326 combos get here
Fold 16.7%Call 79.5%All-in 99.84bb 3.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when BTN limps, SB isolates to 4bb, BTN 3-bets to 8bb, SB 4-bets to 18.4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

BTN limps, SB isolates to 4bb, BTN 3-bets to 8bb, SB 4-bets to 18.4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the button (BTN) folds 16.7%, calls 79.5% and goes all-in 99.84bb 3.8%. Always call: TT, AQs, 96s. Mixed: JJ, K6s.

Always fold
No hand plays this every time
Always call
TT, AQs, 96s
Always all-in 99.84bb
No hand plays this every time
Mixed
JJ, K6s
Settings: 6-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 24.89). 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.

Tree: Two HRC solves of this game in one, callers first: the callers solve (its raises grow by 1bb, or 1x, for each player who called before) has every one of the 1,323 spots here, so the base solve gives none of them.

This spot: from the callers solve (sizes: opens 2.0bb + 1.0bb, 2.5bb + 1.0bb, 3.0bb + 1.0bb; 3-bets 2.0x + 1.0x, 3.0x + 1.0x; 4-bets 2.3x, all-in; 5-bets all-in; HRC CI 24.58).

Rake sources for the games it fits: 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.