PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN all-in

BB vs BTN all-in

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN goes all-in · Big blind to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 52.8bbYour cards?
11.5bb
39.84bb
0.5bb

Tap your two cards.

Big blind's range

270 of 1,326 combos get here
Fold 53.1%Call 46.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

BTN limps, BB isolates to 2.5bb, BTN 3-bets to 5bb, BB 4-bets to 11.5bb, BTN goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the big blind (BB) folds 53.1% and calls 46.9%. Always call: JJ+, 99, AKs, AQo+. Mixed: TT, 77-88, A7s, KQs, K6s, 65s, ATo, KJo.

Always fold
JTs, 97s, 86s
Always call
JJ+, 99, AKs, AQo+
Mixed
TT, 77-88, A7s, KQs, K6s, 65s, ATo, KJo
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.