PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · 5% rake, cap 3bb/BB vs BTN open 2.5bb

BB vs BTN open 2.5bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 250bb · BTN opens 2.5bb · Big blind to act

6-max · 250bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
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 59.9%Call 25.2%Raise 5/7.5bb 15%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 250bb?

BTN opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 250bb: the big blind (BB) folds 59.9%, calls 25.2% and raises 5/7.5bb 15%. Always call: 22, A9s, A2s, K8s, K2s-K4s, Q2s-Q8s, J5s-J7s, T6s, 85s, 74s-75s, 63s-64s, 43s, A7o-ATo, A5o, K9o-KJo, QTo, T9o. Always raise 5/7.5bb: TT+, 88, 55-66, ATs+, A7s-A8s, A3s-A5s, K9s+, QTs+, J9s+, T8s+, AKo. Mixed: 99, 77, 33-44, A6s, K5s-K7s, Q9s, J8s, T7s, 96s+, 86s+, 76s, 65s, 52s+, AJo-AQo, A4o, KQo, QJo, Q9o, J9o+, T8o, 87o.

Always fold
J2s-J4s, T2s-T5s, 92s-95s, 82s-84s, 72s-73s, 62s, 42s, 32s, A6o, A2o-A3o, K2o-K8o, Q2o-Q8o, J2o-J8o, T2o-T7o, 92o+, 82o-86o, 72o+, 62o+, 52o+, 42o+, 32o
Always call
22, A9s, A2s, K8s, K2s-K4s, Q2s-Q8s, J5s-J7s, T6s, 85s, 74s-75s, 63s-64s, 43s, A7o-ATo, A5o, K9o-KJo, QTo, T9o
Always raise 5/7.5bb
TT+, 88, 55-66, ATs+, A7s-A8s, A3s-A5s, K9s+, QTs+, J9s+, T8s+, AKo
Mixed
99, 77, 33-44, A6s, K5s-K7s, Q9s, J8s, T7s, 96s+, 86s+, 76s, 65s, 52s+, AJo-AQo, A4o, KQo, QJo, Q9o, J9o+, T8o, 87o
Settings: 6-max · 250bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 250bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 24.86). 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).