PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB iso raise 3bb

BB vs SB iso raise 3bb

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

Fits exactlyno game we have checked

Close1 games

CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here

Tournament

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

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 5.96bbYour cards?

1bb

3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 77.1%Call 10.1%Raise 6bb 0.9%All-in 19.84bb 12%

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 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO limps, SB isolates to 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 77.1%, calls 10.1%, raises 6bb 0.9% and goes all-in 19.84bb 12%. Always call: A9s, T8s+, 98s, 87s, 76s, 65s, 54s, A9o, KJo+, QJo. Always all-in 19.84bb: 77-QQ, 22-33, AJs, A7s, K9s, Q9s-QTs, ATo+. Mixed: KK+, 44-66, AQs+, ATs, A8s, A2s-A6s, KTs+, K7s, K5s, QJs, Q8s, J9s+, 97s, 86s, 75s, A8o, A6o, KTo, QTo.

Always fold: K8s, K6s, K2s-K4s, Q2s-Q7s, J2s-J8s, T2s-T7s, 92s-96s, 82s-85s, 72s-74s, 62s-64s, 52s-53s, 42s+, 32s, A7o, A2o-A5o, K2o-K9o, Q2o-Q9o, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: A9s, T8s+, 98s, 87s, 76s, 65s, 54s, A9o, KJo+, QJo
Always raise 6bb: No hand plays this every time
Always all-in 19.84bb: 77-QQ, 22-33, AJs, A7s, K9s, Q9s-QTs, ATo+
Mixed: KK+, 44-66, AQs+, ATs, A8s, A2s-A6s, KTs+, K7s, K5s, QJs, Q8s, J9s+, 97s, 86s, 75s, A8o, A6o, KTo, QTo

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.

Rake sources for the games it fits: 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.