PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BTN vs CO 4-bet 17.25bb

BTN vs CO 4-bet 17.25bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb · Button to act

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 26.89bbYour cards?
7.5bb
0.5bb
1bb
17.25bb

Tap your two cards.

Button's range

378 of 1,326 combos get here
Fold 29.1%Call 60.6%Raise 37.95bb 10.2%All-in 199.84bb 0.2%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO opens 2.5bb, BTN 3-bets to 7.5bb, CO 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the button (BTN) folds 29.1%, calls 60.6%, raises 37.95bb 10.2% and goes all-in 199.84bb 0.2%. Always call: 22-TT, AJs, A9s, A4s-A5s, K7s-KJs, QTs+, J9s+, 97s+, 86s+, 76s, 64s+, 54s, AKo. Always raise 37.95bb: AA, AKs. Mixed: JJ-KK, AQs, ATs, A6s-A8s, A2s-A3s, KQs, K3s-K6s, Q8s-Q9s, J8s, T7s+, 75s, AJo-AQo, KJo+, JTo.

Always fold
ATo, KTo, QTo+
Always call
22-TT, AJs, A9s, A4s-A5s, K7s-KJs, QTs+, J9s+, 97s+, 86s+, 76s, 64s+, 54s, AKo
Always raise 37.95bb
AA, AKs
Always all-in 199.84bb
No hand plays this every time
Mixed
JJ-KK, AQs, ATs, A6s-A8s, A2s-A3s, KQs, K3s-K6s, Q8s-Q9s, J8s, T7s+, 75s, AJo-AQo, KJo+, JTo
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; 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.