PokerSolver
PokerSolver/6-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN 4-bet 17.25bb

CO vs BTN 4-bet 17.25bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, BTN isolates to 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb · Cutoff to act

6-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 27.21bbYour cards?
7.5bb
17.25bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

256 of 1,326 combos get here
Fold 40.5%Call 53.5%All-in 149.84bb 6%
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 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO limps, BTN isolates to 2.5bb, CO 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the cutoff (CO) folds 40.5%, calls 53.5% and goes all-in 149.84bb 6%. Always call: TT-KK, 55-88, AQs, ATs, A8s, KTs, QJs, T9s, 76s, 54s. Mixed: AA, AKs, A6s-A7s, A2s-A4s, K9s, J8s-J9s, T8s.

Always fold
K8s, Q9s, ATo, KJo+, JTo
Always call
TT-KK, 55-88, AQs, ATs, A8s, KTs, QJs, T9s, 76s, 54s
Always all-in 149.84bb
No hand plays this every time
Mixed
AA, AKs, A6s-A7s, A2s-A4s, K9s, J8s-J9s, T8s
Settings: 6-max · 150bb · 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, 150bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.4). 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.