PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB call

BB vs SB call

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · CO limps, BTN isolates to 3bb, SB calls · Big blind to act

6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 8.96bbYour cards?

1bb

3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 85.5%Call 3.5%Raise 6bb 3.4%All-in 19.84bb 7.7%

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, BTN isolates to 3bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO limps, BTN isolates to 3bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 85.5%, calls 3.5%, raises 6bb 3.4% and goes all-in 19.84bb 7.7%. Always call: AJs. Always raise 6bb: 88. Always all-in 19.84bb: JJ, 99, 66-77, AQs, AJo. Mixed: QQ+, TT, 33-55, AKs, A2s-ATs, K9s+, K6s, K4s, QJs, Q9s, J8s+, T7s, 97s+, 93s, 87s, 75s, AQo+, A9o-ATo, A3o, KQo.

Always fold: 22, K7s-K8s, K5s, K2s-K3s, QTs, Q2s-Q8s, J2s-J7s, T8s+, T2s-T6s, 94s-96s, 92s, 82s-86s, 76s, 72s-74s, 62s+, 52s+, 42s+, 32s, A4o-A8o, A2o, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: AJs
Always raise 6bb: 88
Always all-in 19.84bb: JJ, 99, 66-77, AQs, AJo
Mixed: QQ+, TT, 33-55, AKs, A2s-ATs, K9s+, K6s, K4s, QJs, Q9s, J8s+, T7s, 97s+, 93s, 87s, 75s, AQo+, A9o-ATo, A3o, KQo

Settings: 6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.