PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs CO 5-bet 25.3bb

BB vs CO 5-bet 25.3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb, BB 4-bets to 11.5bb, CO 5-bets to 25.3bb · Big blind to act

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 37.94bbYour cards?
11.5bb
25.3bb
0.5bb

Tap your two cards.

Big blind's range

254 of 1,326 combos get here
Fold 62%Call 29.1%All-in 199.84bb 9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb, BB 4-bets to 11.5bb, CO 5-bets to 25.3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb, BB 4-bets to 11.5bb, CO 5-bets to 25.3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 62%, calls 29.1% and goes all-in 199.84bb 9%. Mixed: QQ+, 99, 66, 44, AKs, ATs-AJs, A4s-A8s, A2s, KQs, K9s, Q9s-QTs, T8s, 86s, 63s, AKo.

Always fold
KTs-KJs, Q8s, T7s, 96s, 76s
Always call
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
QQ+, 99, 66, 44, AKs, ATs-AJs, A4s-A8s, A2s, KQs, K9s, Q9s-QTs, T8s, 86s, 63s, AKo
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.