PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB open 3bb

BB vs SB open 3bb

Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB opens 3bb · Big blind to act

Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 4.32bbYour cards?
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 44.4%Call 30.4%Raise 6/9bb 25.3%
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 Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 100bb?

SB opens 3bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 100bb: the big blind (BB) folds 44.4%, calls 30.4% and raises 6/9bb 25.3%. Always call: 77, 22-44, A6s, K2s-K5s, Q3s-Q7s, J4s-J8s, J2s, T4s-T5s, T2s, A6o-A8o, A2o-A4o, K7o-K8o, QTo, J9o, 87o. Always raise 6/9bb: 88+, A8s+, A4s-A5s, K9s+, Q9s+, JTs, 86s+, 75s+, 65s, 54s, A9o+, KQo. Mixed: 55-66, A7s, A2s-A3s, K6s-K8s, Q8s, Q2s, J9s, J3s, T6s+, T3s, 93s+, 84s-85s, 74s, 63s-64s, 52s-53s, 43s, A5o, K9o-KJo, K6o, QJo, Q8o-Q9o, JTo, J8o, T7o+, 97o+, 76o, 65o.

Always fold
92s, 82s-83s, 72s-73s, 62s, 42s, 32s, K2o-K5o, Q2o-Q7o, J2o-J7o, T2o-T6o, 92o-96o, 82o-86o, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call
77, 22-44, A6s, K2s-K5s, Q3s-Q7s, J4s-J8s, J2s, T4s-T5s, T2s, A6o-A8o, A2o-A4o, K7o-K8o, QTo, J9o, 87o
Always raise 6/9bb
88+, A8s+, A4s-A5s, K9s+, Q9s+, JTs, 86s+, 75s+, 65s, 54s, A9o+, KQo
Mixed
55-66, A7s, A2s-A3s, K6s-K8s, Q8s, Q2s, J9s, J3s, T6s+, T3s, 93s+, 84s-85s, 74s, 63s-64s, 52s-53s, 43s, A5o, K9o-KJo, K6o, QJo, Q8o-Q9o, JTo, J8o, T7o+, 97o+, 76o, 65o
Settings: Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 8.9). 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.