PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO open 3bb

BB vs CO open 3bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 3bb · 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 5.3bbYour cards?
1bb
3bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 67.2%Call 24.1%Raise 6/9bb 8.7%
Tap a hand, or type one above, to see its exact mix.

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

CO opens 3bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 67.2%, calls 24.1% and raises 6/9bb 8.7%. Always call: 22-33, A8s-A9s, K2s-K4s, Q6s-Q9s, Q4s, J7s, T7s, 97s+, 85s-86s, 74s-75s, 64s, 53s, 43s, A8o-AQo, KTo+, QTo+. Always raise 6/9bb: JJ+, AQs+, A4s, JTs. Mixed: 44-TT, ATs-AJs, A5s-A7s, A2s-A3s, K5s+, QTs+, Q5s, Q3s, J8s-J9s, T8s+, 96s, 87s, 76s, 65s, 54s, AKo, JTo, T9o.

Always fold
Q2s, J2s-J6s, T2s-T6s, 92s-95s, 82s-84s, 72s-73s, 62s-63s, 52s, 42s, 32s, A2o-A7o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o-T8o, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
22-33, A8s-A9s, K2s-K4s, Q6s-Q9s, Q4s, J7s, T7s, 97s+, 85s-86s, 74s-75s, 64s, 53s, 43s, A8o-AQo, KTo+, QTo+
Always raise 6/9bb
JJ+, AQs+, A4s, JTs
Mixed
44-TT, ATs-AJs, A5s-A7s, A2s-A3s, K5s+, QTs+, Q5s, Q3s, J8s-J9s, T8s+, 96s, 87s, 76s, 65s, 54s, AKo, JTo, T9o
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.