BB vs CO all-in
4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO limps, BB isolates to 3bb, CO 3-bets to 9bb, BB 4-bets to 20.7bb, CO goes all-in · Big blind to act
Fits exactlyno game we have checked
CloseCP1 games
- CPCoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 221.68bbYour cards?
20.7bb
199.84bb
0.5bb
Tap your two cards.
Big blind's range
262 of 1,326 combos get hereFold 70.2%Call 29.8%
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 3bb, CO 3-bets to 9bb, BB 4-bets to 20.7bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?
CO limps, BB isolates to 3bb, CO 3-bets to 9bb, BB 4-bets to 20.7bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 70.2% and calls 29.8%. Always call: AA, JJ-QQ, AKs. Mixed: KK, 99-TT, 66-77, A9s-AQs, A7s, A4s-A5s, KTs+, K4s-K5s, J9s+, 98s, AQo+.
- Always fold
- 33-55, A8s, A2s-A3s, K9s, QTs+, Q5s, T9s, 86s, 63s, A8o
- Always call
- AA, JJ-QQ, AKs
- Mixed
- KK, 99-TT, 66-77, A9s-AQs, A7s, A4s-A5s, KTs+, K4s-K5s, J9s+, 98s, AQo+
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.