PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN 5-bet 45.54bb

BB vs BTN 5-bet 45.54bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN 5-bets to 45.54bb · Big blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 67.38bbYour cards?
20.7bb
45.54bb
0.5bb

Tap your two cards.

Big blind's range

424 of 1,326 combos get here
Fold 79.3%Call 8.4%All-in 249.84bb 12.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN 5-bets to 45.54bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN 5-bets to 45.54bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 79.3%, calls 8.4% and goes all-in 249.84bb 12.3%. Mixed: KK+, 99-JJ, 66-77, 44, AQs+, A2s-ATs, KJs+, K7s, QJs, J9s, J6s, T8s+, 97s, 87s, 76s, 74s, 64s, 43s, AKo.

Always fold
QQ, 88, 55, 22, AJs, KTs, Q8s-QTs, Q3s, J5s, T7s, T4s, 98s, 75s, AQo, ATo, A7o, KTo+, QTo+, JTo, T9o
Always call
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
KK+, 99-JJ, 66-77, 44, AQs+, A2s-ATs, KJs+, K7s, QJs, J9s, J6s, T8s+, 97s, 87s, 76s, 74s, 64s, 43s, AKo
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.