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 · BTN opens 2.5bb, 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 6.96bbYour cards?

1bb

2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 60.7%Call 23%Raise 5/7.5bb 16.3%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 2.5bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

BTN opens 2.5bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 60.7%, calls 23% and raises 5/7.5bb 16.3%. Always call: 22-44, A2s, QTs, Q8s, Q5s, J8s, 98s, 85s, 64s+, 62s, JTo. Always raise 5/7.5bb: 66+, A9s+, A5s, A3s, KJs, A9o+. Mixed: 55, A6s-A8s, A4s, KQs, K2s-KTs, QJs, Q9s, Q6s-Q7s, Q2s-Q4s, J9s+, J4s-J7s, T6s+, T2s-T4s, 96s-97s, 92s, 86s+, 84s, 73s+, 63s, 53s+, 42s+, A2o-A8o, K9o+, Q9o+, T8o+, 87o, 75o+, 65o.

Always fold: J2s-J3s, T5s, 93s-95s, 82s-83s, 72s, 52s, 32s, K2o-K8o, Q2o-Q8o, J2o-J9o, T2o-T7o, 92o+, 82o-86o, 72o-74o, 62o-64o, 52o+, 42o+, 32o
Always call: 22-44, A2s, QTs, Q8s, Q5s, J8s, 98s, 85s, 64s+, 62s, JTo
Always raise 5/7.5bb: 66+, A9s+, A5s, A3s, KJs, A9o+
Mixed: 55, A6s-A8s, A4s, KQs, K2s-KTs, QJs, Q9s, Q6s-Q7s, Q2s-Q4s, J9s+, J4s-J7s, T6s+, T2s-T4s, 96s-97s, 92s, 86s+, 84s, 73s+, 63s, 53s+, 42s+, A2o-A8o, K9o+, Q9o+, T8o+, 87o, 75o+, 65o

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.