PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs SB iso raise 2.5bb

BTN vs SB iso raise 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, SB isolates to 2.5bb · Button to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.14bbYour cards?
1bb
2.5bb
1bb

Tap your two cards.

Button's range

622 of 1,326 combos get here
Fold <0.1%Call 68.5%Raise 5/7.5bb 31.5%
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 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

BTN limps, SB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the button (BTN) folds 0%, calls 68.5% and raises 5/7.5bb 31.5%. Always call: 22-33, K2s-K3s, Q2s-Q7s, J4s-J7s, T5s-T6s, 85s, 74s, 43s, A7o-A8o, A4o-A5o, K8o, QTo, J9o, T9o, 97o+, 87o, 76o, 65o. Always raise 5/7.5bb: 55+, A6s, A4s, A2s, KJs, 98s, AJo+, KQo. Mixed: 44, K5s-K8s, 96s, 53s, A9o, KTo-KJo, QJo.

Always fold
No hand plays this every time
Always call
22-33, K2s-K3s, Q2s-Q7s, J4s-J7s, T5s-T6s, 85s, 74s, 43s, A7o-A8o, A4o-A5o, K8o, QTo, J9o, T9o, 97o+, 87o, 76o, 65o
Always raise 5/7.5bb
55+, A6s, A4s, A2s, KJs, 98s, AJo+, KQo
Mixed
44, K5s-K8s, 96s, 53s, A9o, KTo-KJo, QJo
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.