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

CO vs BTN iso raise 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, BTN isolates to 4bb · Cutoff 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

6-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 7.46bbYour cards?

1bb

4bb

0.5bb

1bb

Tap your two cards.

Cutoff's range

410 of 1,326 combos get here

Fold 32.3%Call 52.9%Raise 8/12bb 14.9%

Tap a hand, or type one above, to see its exact mix.

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

CO limps, BTN isolates to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the cutoff (CO) folds 32.3%, calls 52.9% and raises 8/12bb 14.9%. Always call: 22-TT, A6s-A7s, A3s-A4s, K6s-KTs, Q9s-QTs, J9s+, T8s+, 97s+, 86s+, 76s, 65s, 54s, ATo-AJo, KJo+. Always raise 8/12bb: KK, JJ, AQs+, AQo. Mixed: A8s, A5s, QJo.

Always fold: Q7s-Q8s, J8s, T7s, A9o, KTo, QTo, JTo, T9o
Always call: 22-TT, A6s-A7s, A3s-A4s, K6s-KTs, Q9s-QTs, J9s+, T8s+, 97s+, 86s+, 76s, 65s, 54s, ATo-AJo, KJo+
Always raise 8/12bb: KK, JJ, AQs+, AQo
Mixed: A8s, A5s, QJo

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.