PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO open 3bb

BTN vs CO open 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO opens 3bb · Button to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.14bbYour cards?
0.5bb
1bb
3bb

Tap your two cards.

Button's range

1,326 of 1,326 combos get here
Fold 81.4%Call 1.6%Raise 6/9bb 17.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the button (BTN) folds 81.4%, calls 1.6% and raises 6/9bb 17.1%. Always raise 6/9bb: TT+, 77-88, ATs+, A8s, A6s, A2s-A4s, KTs+, K8s, J9s+, 65s, AQo+. Mixed: 99, 33-66, A9s, A7s, A5s, K9s, K5s-K7s, Q9s+, T8s+, 98s, 87s, 76s, 54s, ATo-AJo, KJo+, QJo.

Always fold
22, K2s-K4s, Q2s-Q8s, J2s-J8s, T2s-T7s, 92s-97s, 82s-86s, 72s-75s, 62s-64s, 52s-53s, 42s+, 32s, A2o-A9o, K2o-KTo, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 6/9bb
TT+, 77-88, ATs+, A8s, A6s, A2s-A4s, KTs+, K8s, J9s+, 65s, AQo+
Mixed
99, 33-66, A9s, A7s, A5s, K9s, K5s-K7s, Q9s+, T8s+, 98s, 87s, 76s, 54s, ATo-AJo, KJo+, QJo
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.