PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN 4-bet 17.25bb

BB vs BTN 4-bet 17.25bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · 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
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 25.89bbYour cards?
7.5bb
17.25bb
0.5bb

Tap your two cards.

Big blind's range

686 of 1,326 combos get here
Fold 76.8%Call 11.8%All-in 79.84bb 11.4%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

BTN opens 2.5bb, BB 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 76.8%, calls 11.8% and goes all-in 79.84bb 11.4%. Always call: 88, 55, ATs-AJs, KJs, QTs. Always all-in 79.84bb: JJ-KK, AKs, A4s-A5s, AKo. Mixed: AA, 99-TT, 66-77, AQs, A6s-A8s, A2s-A3s, KQs, KTs, QJs, Q8s, JTs, T9s, 98s, 87s, 75s+, 65s, 54s, AJo-AQo, KQo.

Always fold
K4s-K9s, Q9s, Q6s-Q7s, Q4s, J6s-J9s, T5s-T8s, 94s-97s, 84s-86s, 74s, 64s, 53s, 42s+, ATo, A7o, A3o-A5o, K9o-KJo, K7o, Q9o+, J9o+, T7o+, 98o, 76o, 65o, 54o
Always call
88, 55, ATs-AJs, KJs, QTs
Always all-in 79.84bb
JJ-KK, AKs, A4s-A5s, AKo
Mixed
AA, 99-TT, 66-77, AQs, A6s-A8s, A2s-A3s, KQs, KTs, QJs, Q8s, JTs, T9s, 98s, 87s, 75s+, 65s, 54s, AJo-AQo, KQo
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; 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.