PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN open 2bb

BB vs BTN open 2bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · BTN opens 2bb · Big blind to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 4.14bbYour cards?
1bb
2bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 21.3%Call 62.7%Raise 4/6bb 16%
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 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

BTN opens 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 21.3%, calls 62.7% and raises 4/6bb 16%. Always call: 22-44, A9s, A2s, K2s-K5s, Q2s-Q8s, J2s-J5s, T2s-T5s, 92s-96s, 82s-86s, 72s-75s, 62s-63s, 52s-53s, 42s, 32s, A2o-ATo, K2o-KJo, Q3o-Q9o, J6o-J9o, T7o+, 96o+, 86o+, 75o+, 64o+, 54o. Always raise 4/6bb: 88+, 66, ATs+, A7s, A4s-A5s, KTs+, QJs, JTs, T8s+, 76s, AKo. Mixed: 77, 55, A8s, A6s, A3s, K6s-K9s, Q9s-QTs, J6s-J9s, T6s-T7s, 97s+, 87s, 64s+, 54s, 43s, AJo-AQo, KQo, QTo+, Q2o, JTo, J4o-J5o, T6o, 85o, 74o, 53o, 43o.

Always fold
J2o-J3o, T2o-T5o, 92o-95o, 82o-84o, 72o-73o, 62o-63o, 52o, 42o, 32o
Always call
22-44, A9s, A2s, K2s-K5s, Q2s-Q8s, J2s-J5s, T2s-T5s, 92s-96s, 82s-86s, 72s-75s, 62s-63s, 52s-53s, 42s, 32s, A2o-ATo, K2o-KJo, Q3o-Q9o, J6o-J9o, T7o+, 96o+, 86o+, 75o+, 64o+, 54o
Always raise 4/6bb
88+, 66, ATs+, A7s, A4s-A5s, KTs+, QJs, JTs, T8s+, 76s, AKo
Mixed
77, 55, A8s, A6s, A3s, K6s-K9s, Q9s-QTs, J6s-J9s, T6s-T7s, 97s+, 87s, 64s+, 54s, 43s, AJo-AQo, KQo, QTo+, Q2o, JTo, J4o-J5o, T6o, 85o, 74o, 53o, 43o
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.