PokerSolver
PokerSolver/6-max · 100bb · SB 0.4bb · 5% rake, cap 3bb/BB vs SB iso raise 3bb

BB vs SB iso raise 3bb

6-max · SB 0.4bb · 5% rake, cap 3bb (blinds 0.4/1bb) · 100bb · CO limps, SB isolates to 3bb · Big blind to act

6-max · 100bb · SB 0.4bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 5bbYour cards?
1bb
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 90.4%Call 6.2%Raise 6/9bb 3.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, SB isolates to 3bb in 6-max · SB 0.4bb · 5% rake, cap 3bb at 100bb?

CO limps, SB isolates to 3bb in 6-max · SB 0.4bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 90.4%, calls 6.2% and raises 6/9bb 3.3%. Always call: 99, 77. Always raise 6/9bb: AA. Mixed: TT-KK, 88, 33-66, ATs+, A3s-A7s, K9s+, K2s-K4s, QJs, Q9s, Q4s-Q5s, J9s+, J6s-J7s, T7s, T4s-T5s, 94s, 85s+, 74s+, 54s, 43s, AQo+, QTo, J7o.

Always fold
22, A8s-A9s, A2s, K5s-K8s, QTs, Q6s-Q8s, Q2s-Q3s, J8s, J2s-J5s, T8s+, T6s, T2s-T3s, 95s+, 92s-93s, 82s-84s, 72s-73s, 62s+, 52s-53s, 42s, 32s, A2o-AJo, K2o+, QJo, Q2o-Q9o, J8o+, J2o-J6o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
99, 77
Always raise 6/9bb
AA
Mixed
TT-KK, 88, 33-66, ATs+, A3s-A7s, K9s+, K2s-K4s, QJs, Q9s, Q4s-Q5s, J9s+, J6s-J7s, T7s, T4s-T5s, 94s, 85s+, 74s+, 54s, 43s, AQo+, QTo, J7o
Settings: 6-max · 100bb · SB 0.4bb · 5% rake, cap 3bb (small blind 0.4bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC). 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 NL5, NL25; Natural8 Rush & Cash NL5, NL25.

Close: GGPoker regular cash NL500 (rake cap 1.6bb there, 3bb here).

Close: CoinPoker cash NL500 (rake cap 1.6bb there, 3bb here; only its tables without antes).

Close: WPT Global cash NL5 (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 NL50 (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: Natural8 regular cash NL500 (rake cap 1.6bb there, 3bb here).

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; 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); natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop).