PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/CO vs SB 4-bet 20.7bb

CO vs SB 4-bet 20.7bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb · Cutoff to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 31.34bbYour cards?
9bb
20.7bb
1bb

Tap your two cards.

Cutoff's range

296 of 1,326 combos get here
Fold 38.9%Call 56%All-in 149.84bb 5%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the cutoff (CO) folds 38.9%, calls 56% and goes all-in 149.84bb 5%. Always call: 99-KK, 22-66, AQs, KTs, T8s+, 97s, 86s, 76s, 65s, AQo. Mixed: AA, AKs, A6s, A4s, A2s, K7s-K9s, 98s, KQo.

Always fold
K4s, Q8s, A9o-AJo, KJo
Always call
99-KK, 22-66, AQs, KTs, T8s+, 97s, 86s, 76s, 65s, AQo
Always all-in 149.84bb
No hand plays this every time
Mixed
AA, AKs, A6s, A4s, A2s, K7s-K9s, 98s, KQo
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.