PokerSolver
PokerSolver/6-max · 100bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB open 2.5bb

BB vs SB open 2.5bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB opens 2.5bb · Big blind to act

6-max · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 3.5bbYour cards?
1bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 39.1%Call 41%Raise 5/7.5/10bb 19.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB opens 2.5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 39.1%, calls 41% and raises 5/7.5/10bb 19.8%. Always call: 77, 22-44, A6s-A9s, A2s, K8s-K9s, K2s-K6s, Q2s-Q9s, J3s-J8s, T7s, T5s, T3s, 95s-97s, 85s-86s, 74s-75s, 52s-53s, 42s, A7o-ATo, A5o, K9o-KJo, Q9o+, JTo, 98o, 87o, 76o, 65o. Always raise 5/7.5/10bb: 99+, AJs+, KQs, JTs, T8s+, AQo+, A2o. Mixed: 88, 55-66, ATs, A3s-A5s, KTs-KJs, K7s, QTs+, J9s, J2s, T6s, T4s, T2s, 98s, 93s-94s, 87s, 84s, 76s, 73s, 63s+, 54s, 43s, 32s, AJo, A6o, A3o-A4o, KQo, K4o-K8o, Q6o-Q8o, J7o-J9o, T7o+, 97o, 54o.

Always fold
92s, 82s-83s, 72s, 62s, K2o-K3o, Q2o-Q5o, J2o-J6o, T2o-T6o, 92o-96o, 82o-86o, 72o-75o, 62o-64o, 52o-53o, 42o+, 32o
Always call
77, 22-44, A6s-A9s, A2s, K8s-K9s, K2s-K6s, Q2s-Q9s, J3s-J8s, T7s, T5s, T3s, 95s-97s, 85s-86s, 74s-75s, 52s-53s, 42s, A7o-ATo, A5o, K9o-KJo, Q9o+, JTo, 98o, 87o, 76o, 65o
Always raise 5/7.5/10bb
99+, AJs+, KQs, JTs, T8s+, AQo+, A2o
Mixed
88, 55-66, ATs, A3s-A5s, KTs-KJs, K7s, QTs+, J9s, J2s, T6s, T4s, T2s, 98s, 93s-94s, 87s, 84s, 76s, 73s, 63s+, 54s, 43s, 32s, AJo, A6o, A3o-A4o, KQo, K4o-K8o, Q6o-Q8o, J7o-J9o, T7o+, 97o, 54o
Settings: 6-max · 100bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 26.89). 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).