PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB open 3bb

BB vs SB open 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB opens 3bb · Big blind to act

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 4.64bbYour cards?
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 32.4%Call 51.8%Raise 6/9bb 15.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

SB opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 32.4%, calls 51.8% and raises 6/9bb 15.8%. Always call: 66-77, 22-33, A6s-A9s, A2s-A4s, K2s-KTs, Q2s-Q9s, J2s-J9s, T3s+, 95s, 93s, 84s-85s, 73s-75s, 63s-64s, 52s-53s, 42s+, 32s, A7o-ATo, A4o-A5o, K6o-KJo, Q8o+, J9o+, T8o, 98o, 87o, 76o, 65o, 54o. Always raise 6/9bb: TT+, AJs+, KQs, AQo+, A2o, Q5o. Mixed: 88-99, 44-55, ATs, A5s, KJs, QTs+, JTs, T2s, 96s+, 94s, 92s, 86s+, 82s-83s, 76s, 65s, 62s, 54s, AJo, A6o, A3o, KQo, K3o-K5o, Q6o-Q7o, Q4o, J7o-J8o, J5o, T9o, T6o-T7o, 97o, 86o.

Always fold
72s, K2o, Q2o-Q3o, J6o, J2o-J4o, T2o-T5o, 92o-96o, 82o-85o, 72o-75o, 62o-64o, 52o-53o, 42o+, 32o
Always call
66-77, 22-33, A6s-A9s, A2s-A4s, K2s-KTs, Q2s-Q9s, J2s-J9s, T3s+, 95s, 93s, 84s-85s, 73s-75s, 63s-64s, 52s-53s, 42s+, 32s, A7o-ATo, A4o-A5o, K6o-KJo, Q8o+, J9o+, T8o, 98o, 87o, 76o, 65o, 54o
Always raise 6/9bb
TT+, AJs+, KQs, AQo+, A2o, Q5o
Mixed
88-99, 44-55, ATs, A5s, KJs, QTs+, JTs, T2s, 96s+, 94s, 92s, 86s+, 82s-83s, 76s, 65s, 62s, 54s, AJo, A6o, A3o, KQo, K3o-K5o, Q6o-Q7o, Q4o, J7o-J8o, J5o, T9o, T6o-T7o, 97o, 86o
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.