PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB iso raise 3bb

BB vs SB iso raise 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · BTN 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
4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.64bbYour cards?
1bb
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 81.9%Call 10.4%Raise 6/9bb 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 BTN limps, SB isolates to 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

BTN limps, SB isolates to 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 81.9%, calls 10.4% and raises 6/9bb 7.7%. Always call: A4s, KQs, JTs, 87s. Always raise 6/9bb: AA, AQs. Mixed: 22-KK, AKs, A5s-AJs, A2s-A3s, K9s-KJs, K7s, K4s, Q9s+, Q5s, J8s-J9s, J2s-J3s, T8s+, T6s, 97s+, 86s, 75s+, 54s, 43s, ATo+, KJo+, K9o, JTo, 75o.

Always fold
K8s, K5s-K6s, K2s-K3s, Q6s-Q8s, Q2s-Q4s, J4s-J7s, T7s, T2s-T5s, 92s-96s, 82s-85s, 72s-74s, 62s+, 52s-53s, 42s, 32s, A2o-A9o, KTo, K2o-K8o, Q2o+, J2o-J9o, T2o+, 92o+, 82o+, 76o, 72o-74o, 62o+, 52o+, 42o+, 32o
Always call
A4s, KQs, JTs, 87s
Always raise 6/9bb
AA, AQs
Mixed
22-KK, AKs, A5s-AJs, A2s-A3s, K9s-KJs, K7s, K4s, Q9s+, Q5s, J8s-J9s, J2s-J3s, T8s+, T6s, 97s+, 86s, 75s+, 54s, 43s, ATo+, KJo+, K9o, JTo, 75o
Settings: 4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.