SB vs CO 4-bet 20.7bb
5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · CO opens 3bb, SB 3-bets to 9bb, CO 4-bets to 20.7bb · Small 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
5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 31.5bbYour cards?
9bb
1bb
20.7bb
Tap your two cards.
Small blind's range
344 of 1,326 combos get hereFold 69.3%Call 7.3%All-in 59.84bb 23.4%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind (SB) when CO opens 3bb, SB 3-bets to 9bb, CO 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?
CO opens 3bb, SB 3-bets to 9bb, CO 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the small blind (SB) folds 69.3%, calls 7.3% and goes all-in 59.84bb 23.4%. Always call: ATs. Always all-in 59.84bb: TT+, AQs+, KQs, AKo. Mixed: 55-99, A8s, A4s-A5s, KTs-KJs, QTs+, AQo.
- Always fold
- 44, 22, A6s-A7s, A2s-A3s, K4s-K9s, Q8s-Q9s, Q5s, J7s+, T7s+, 98s, ATo-AJo, KTo+, QTo+, JTo
- Always call
- ATs
- Always all-in 59.84bb
- TT+, AQs+, KQs, AKo
- Mixed
- 55-99, A8s, A4s-A5s, KTs-KJs, QTs+, AQo
Settings: 5-max · 60bb · 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, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.3). 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.