PokerSolver
PokerSolver/6-max · 150bb · SB 0.5bb · 5% rake, cap 3bb/BB vs CO open 3bb

BB vs CO open 3bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 150bb · CO opens 3bb · Big blind to act

6-max · 150bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 4.5bbYour cards?
1bb
3bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 75.5%Call 17.7%Raise 6/9/12bb 6.8%
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 3bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 150bb?

CO opens 3bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 150bb: the big blind (BB) folds 75.5%, calls 17.7% and raises 6/9/12bb 6.8%. Always call: 77, 22-55, AJs-AQs, A8s-A9s, A6s, K8s+, 86s+, AJo-AQo, KQo. Always raise 6/9/12bb: QQ+, AKs, JTs. Mixed: 88-JJ, 66, ATs, A7s, A2s-A5s, K4s-K7s, Q8s+, J8s-J9s, T7s+, 97s+, 76s, 64s+, 54s, AKo, A9o-ATo, KTo-KJo, QTo+, JTo.

Always fold
K2s-K3s, Q2s-Q7s, J2s-J7s, T2s-T6s, 92s-96s, 82s-85s, 72s-75s, 62s-63s, 52s-53s, 42s+, 32s, A2o-A8o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
77, 22-55, AJs-AQs, A8s-A9s, A6s, K8s+, 86s+, AJo-AQo, KQo
Always raise 6/9/12bb
QQ+, AKs, JTs
Mixed
88-JJ, 66, ATs, A7s, A2s-A5s, K4s-K7s, Q8s+, J8s-J9s, T7s+, 97s+, 76s, 64s+, 54s, AKo, A9o-ATo, KTo-KJo, QTo+, JTo
Settings: 6-max · 150bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 150bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 24.94). 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).

Tree: Two HRC solves of this game in one: the extra-sizes solve (3-bets to 2x, 3x or 4x, 4-bets to 2.3x or 3x or all-in) wherever it has every move of the base solve, and the base solve where the extra-sizes one allows no second caller (overcalls).