PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs CO open 2.5bb

BB vs CO open 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO opens 2.5bb · 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 · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 4.64bbYour cards?

1bb

2.5bb

0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 58%Call 32.2%Raise 5/7.5bb 9.8%

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 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO opens 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 58%, calls 32.2% and raises 5/7.5bb 9.8%. Always call: 44, 22, A9s, A6s, A2s, K7s, K2s-K5s, Q2s-Q9s, J3s-J8s, T6s-T7s, 96s-97s, 87s, 84s-85s, 74s+, 63s-64s, 52s-53s, 43s, A8o-AJo, A5o, K9o+, QTo+, T9o, 87o. Always raise 5/7.5bb: JJ+, AJs+, A7s-A8s, A5s, KJs+, QJs, JTs, T9s. Mixed: 55-TT, 33, ATs, A3s-A4s, K8s-KTs, K6s, QTs, J9s, J2s, T8s, T4s-T5s, 98s, 95s, 86s, 65s, 54s, AQo+, A7o, Q9o, J9o+, T8o, 98o, 65o.

Always fold: T2s-T3s, 92s-94s, 82s-83s, 72s-73s, 62s, 42s, 32s, A6o, A2o-A4o, K2o-K8o, Q2o-Q8o, J2o-J8o, T2o-T7o, 92o-97o, 82o-86o, 72o+, 62o-64o, 52o+, 42o+, 32o
Always call: 44, 22, A9s, A6s, A2s, K7s, K2s-K5s, Q2s-Q9s, J3s-J8s, T6s-T7s, 96s-97s, 87s, 84s-85s, 74s+, 63s-64s, 52s-53s, 43s, A8o-AJo, A5o, K9o+, QTo+, T9o, 87o
Always raise 5/7.5bb: JJ+, AJs+, A7s-A8s, A5s, KJs+, QJs, JTs, T9s
Mixed: 55-TT, 33, ATs, A3s-A4s, K8s-KTs, K6s, QTs, J9s, J2s, T8s, T4s-T5s, 98s, 95s, 86s, 65s, 54s, AQo+, A7o, Q9o, J9o+, T8o, 98o, 65o

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.

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.