PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN 4-bet 17.25bb

BB vs BTN 4-bet 17.25bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN opens 2.5bb, BB 3-bets to 7.5bb, BTN 4-bets to 17.25bb · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 26.05bbYour cards?
7.5bb
17.25bb
0.5bb

Tap your two cards.

Big blind's range

654 of 1,326 combos get here
Fold 70.2%Call 21%Raise 37.95bb 5.9%All-in 249.84bb 2.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 2.5bb, BB 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN opens 2.5bb, BB 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 70.2%, calls 21%, raises 37.95bb 5.9% and goes all-in 249.84bb 2.9%. Always call: 99, 77, 22-55, ATs-AJs, KQs, QJs, JTs. Always raise 37.95bb: AA. Always all-in 249.84bb: AKo. Mixed: TT-KK, 88, 66, AQs+, A9s, A2s-A7s, K9s-KJs, K7s, K5s, Q9s-QTs, J8s-J9s, T8s+, 97s+, 86s+, 75s+, 64s+, 54s, AQo.

Always fold
K8s, K6s, K2s-K4s, Q5s-Q8s, J7s, J5s, T3s-T7s, 96s, 94s, 84s-85s, 74s, 62s-63s, 52s-53s, 43s, ATo-AJo, A5o-A7o, A3o, KTo+, K6o-K7o, Q9o+, J9o+, T8o+, 65o, 54o
Always call
99, 77, 22-55, ATs-AJs, KQs, QJs, JTs
Always raise 37.95bb
AA
Always all-in 249.84bb
AKo
Mixed
TT-KK, 88, 66, AQs+, A9s, A2s-A7s, K9s-KJs, K7s, K5s, Q9s-QTs, J8s-J9s, T8s+, 97s+, 86s+, 75s+, 64s+, 54s, AQo
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.

Rake sources for the games it fits: 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.