PokerSolver
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 · UTG limps, SB isolates to 3bb · Big blind to act

6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.96bbYour cards?
1bb
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 84%Call 6.8%Raise 6bb 2%All-in 19.84bb 7.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when UTG limps, SB isolates to 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

UTG limps, SB isolates to 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 84%, calls 6.8%, raises 6bb 2% and goes all-in 19.84bb 7.3%. Always call: 66, 44, A9s, KQo. Always raise 6bb: KK. Always all-in 19.84bb: 88-JJ, AQo+. Mixed: AA, QQ, 77, 55, 22-33, ATs+, A7s-A8s, A2s-A5s, K7s+, QTs+, JTs, T9s, 86s+, 76s, 65s, 54s, ATo-AJo, A8o.

Always fold
A6s, K2s-K6s, Q2s-Q9s, J2s-J9s, T2s-T8s, 92s+, 82s-85s, 72s-75s, 62s-64s, 52s-53s, 42s+, 32s, A9o, A2o-A7o, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
66, 44, A9s, KQo
Always raise 6bb
KK
Always all-in 19.84bb
88-JJ, AQo+
Mixed
AA, QQ, 77, 55, 22-33, ATs+, A7s-A8s, A2s-A5s, K7s+, QTs+, JTs, T9s, 86s+, 76s, 65s, 54s, ATo-AJo, A8o
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.