PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/CO vs BTN all-in

CO vs BTN all-in

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb, BTN goes all-in · Cutoff to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 99.39bbYour cards?
17.25bb
79.84bb
0.5bb
1bb

Tap your two cards.

Cutoff's range

244 of 1,326 combos get here
Fold 70.4%Call 29.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the cutoff (CO) when CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the cutoff (CO) folds 70.4% and calls 29.6%. Always call: 99+, AQs+, AKo. Mixed: 77-88, AQo.

Always fold
44-55, A2s-A9s, K9s-KTs, Q9s-QTs, J9s+, T9s, 98s, 87s, 54s, ATo-AJo, KQo
Always call
99+, AQs+, AKo
Mixed
77-88, AQo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.