PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO 3-bet 4bb

BTN vs CO 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, BTN isolates to 2bb, CO 3-bets to 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
Tournament
4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 8.14bbYour cards?
2bb
0.5bb
1bb
4bb

Tap your two cards.

Button's range

406 of 1,326 combos get here
Fold 6%Call 70%Raise 9.2bb 17.9%All-in 99.84bb 6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO limps, BTN isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO limps, BTN isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the button (BTN) folds 6%, calls 70%, raises 9.2bb 17.9% and goes all-in 99.84bb 6%. Always call: 88-99, 22-66, ATs-AJs, K8s, K4s, T7s, 86s+, 75s+, QJo. Always raise 9.2bb: AA. Mixed: TT-KK, 77, AQs+, A2s-A9s, K9s+, K5s-K7s, Q7s+, J8s-J9s, T8s+, 96s+, 64s+, 54s, A8o+, KTo+, QTo, JTo.

Always fold
No hand plays this every time
Always call
88-99, 22-66, ATs-AJs, K8s, K4s, T7s, 86s+, 75s+, QJo
Always raise 9.2bb
AA
Always all-in 99.84bb
No hand plays this every time
Mixed
TT-KK, 77, AQs+, A2s-A9s, K9s+, K5s-K7s, Q7s+, J8s-J9s, T8s+, 96s+, 64s+, 54s, A8o+, KTo+, QTo, JTo
Settings: 4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.

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.