PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs CO 3-bet 5bb

BB vs CO 3-bet 5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb · 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 · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 8.64bbYour cards?
2.5bb
5bb
0.5bb

Tap your two cards.

Big blind's range

402 of 1,326 combos get here
Fold 43.3%Call 29%Raise 11.5bb 21.1%All-in 99.84bb 6.5%
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 in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 43.3%, calls 29%, raises 11.5bb 21.1% and goes all-in 99.84bb 6.5%. Always call: 33-44, 96s. Always raise 11.5bb: K6s, K3s. Mixed: 55+, A2s+, KTs+, K7s-K8s, K5s, K2s, Q8s-Q9s, J8s+, J6s, T6s+, 98s, 87s, 85s, 75s, 64s+, 53s+, AKo, ATo-AJo, KQo.

Always fold
QTs+, J3s, 76s, KTo, JTo
Always call
33-44, 96s
Always raise 11.5bb
K6s, K3s
Always all-in 99.84bb
No hand plays this every time
Mixed
55+, A2s+, KTs+, K7s-K8s, K5s, K2s, Q8s-Q9s, J8s+, J6s, T6s+, 98s, 87s, 85s, 75s, 64s+, 53s+, AKo, ATo-AJo, KQo
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.