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

BTN vs CO 4-bet 17.25bb

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

5-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 27.05bbYour cards?
7.5bb
0.5bb
1bb
17.25bb

Tap your two cards.

Button's range

410 of 1,326 combos get here
Fold 41.2%Call 52%All-in 149.84bb 6.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the button (BTN) folds 41.2%, calls 52% and goes all-in 149.84bb 6.8%. Always call: AA, 22-JJ, AQs+, A8s-ATs, A5s, K9s+, QTs+, J8s+, T8s+, 98s, 86s+, 76s, 64s+, 54s. Always all-in 149.84bb: KK. Mixed: QQ, AJs, A6s-A7s, A2s-A4s, K6s-K8s, K4s, AJo+.

Always fold
K5s, K2s, Q8s-Q9s, A9o-ATo, KTo+, QTo+, JTo
Always call
AA, 22-JJ, AQs+, A8s-ATs, A5s, K9s+, QTs+, J8s+, T8s+, 98s, 86s+, 76s, 64s+, 54s
Always all-in 149.84bb
KK
Mixed
QQ, AJs, A6s-A7s, A2s-A4s, K6s-K8s, K4s, AJo+
Settings: 5-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 24.89). 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.

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.