PokerSolver/6-max · 40bb · SB 0.5bb · 5% rake, cap 3bb/BB vs CO open 2.5bb

BB vs CO open 2.5bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 40bb · CO opens 2.5bb · Big blind to act

6-max · 40bb · SB 0.5bb · 5% rake, cap 3bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 4bbYour cards?

1bb

2.5bb

0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 71.3%Call 17.2%Raise 5/7.5bb 11.5%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 40bb?

CO opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 40bb: the big blind (BB) folds 71.3%, calls 17.2% and raises 5/7.5bb 11.5%. Always call: 77-88, 22-55, A7s-AJs, K7s-K8s, Q8s, Q6s, J8s, T7s, 86s, 75s, 64s+, QJo. Always raise 5/7.5bb: TT+, AQs+, A3s-A4s, JTs, AQo+. Mixed: 99, 66, A5s-A6s, A2s, K9s+, K3s-K6s, Q9s+, Q7s, Q4s-Q5s, Q2s, J9s, T8s+, 96s+, 87s, 85s, 76s, 53s+, 43s, A9o-AJo, KTo+, QTo, JTo.

Always fold: K2s, Q3s, J2s-J7s, T2s-T6s, 92s-95s, 82s-84s, 72s-74s, 62s-63s, 52s, 42s, 32s, A2o-A8o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: 77-88, 22-55, A7s-AJs, K7s-K8s, Q8s, Q6s, J8s, T7s, 86s, 75s, 64s+, QJo
Always raise 5/7.5bb: TT+, AQs+, A3s-A4s, JTs, AQo+
Mixed: 99, 66, A5s-A6s, A2s, K9s+, K3s-K6s, Q9s+, Q7s, Q4s-Q5s, Q2s, J9s, T8s+, 96s+, 87s, 85s, 76s, 53s+, 43s, A9o-AJo, KTo+, QTo, JTo

Settings: 6-max · 40bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 40bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 24.4). 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: GGPoker Rush & Cash NL2, NL10, NL50, NL100, NL200; GGPoker regular cash NL200; Natural8 Rush & Cash NL2, NL10, NL50, NL100, NL200; Natural8 regular cash NL200.

Close: GGPoker regular cash NL100 (rake cap 5bb there, 3bb here).

Close: PokerStars Zoom NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars Zoom NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL100 (rake cap 5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL200 (only its tables without antes).

Close: WPT Global cash NL10, NL20 (rake cap 6bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL100, NL200 (rake cap 4bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL400, NL600, NL1000 (rake cap 2bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: Natural8 regular cash NL100 (rake cap 5bb there, 3bb here).

Close: ACR Poker cash NL50 (rake cap 6bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL100 (its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL200 (rake cap 1.5bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

CoinPoker tables with antes: their own chart.

Rake sources: ggpoker.com/poker-games/texas-holdem (fetched 2026-10-31); Rush rake and preflop rake confirmed on our own GG exports (972 of 1,034 pots, 210 of 211); regular tables' preflop rule from natural8.com/en/poker/texas-holdem (same network, fetched 2026-10-31); natural8.com/en/poker/rush-and-cash (fetched 2026-10-31; caps $0.06 to $6, 3bb at every stake); the same GGNetwork pools as GGPoker, whose preflop rake we confirmed on GG exports; natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); pokerstars.com/poker/room/rake (fetched 2026-10-31); coinpoker.com/games/texas-holdem/ (caps and the preflop rule) and coinpoker.com/guides/poker-rake/ (5%), fetched 2026-10-31; wptglobal.com/poker/poker-table-rake (fetched 2026-10-31); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).