PokerSolver
PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO all-in

BB vs CO all-in

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, BB isolates to 2.5bb, CO 3-bets to 7.5bb, BB 4-bets to 17.25bb, CO goes all-in · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 118.39bbYour cards?
17.25bb
99.84bb
0.5bb

Tap your two cards.

Big blind's range

258 of 1,326 combos get here
Fold 79.4%Call 20.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2.5bb, CO 3-bets to 7.5bb, BB 4-bets to 17.25bb, CO goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

CO limps, BB isolates to 2.5bb, CO 3-bets to 7.5bb, BB 4-bets to 17.25bb, CO goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the big blind (BB) folds 79.4% and calls 20.6%. Always call: QQ+, AKs. Mixed: 99-TT, 77, 55, T7s, AKo.

Always fold
88, A8s-AJs, A2s-A5s, KTs+, Q9s+, J8s-J9s, T9s, 98s, 54s, ATo
Always call
QQ+, AKs
Mixed
99-TT, 77, 55, T7s, AKo
Settings: 5-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 23.9). 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.

Rake sources for the games it fits: 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.