PokerSolver
PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 4-bet 17.25bb

SB vs CO 4-bet 17.25bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO opens 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb · Small 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 26.55bbYour cards?
7.5bb
1bb
17.25bb

Tap your two cards.

Small blind's range

340 of 1,326 combos get here
Fold 56.6%Call 28.6%All-in 99.84bb 14.7%
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 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

CO opens 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 56.6%, calls 28.6% and goes all-in 99.84bb 14.7%. Always call: TT, 55-77, AJs-AQs, KQs, 76s, 65s, 54s. Always all-in 99.84bb: QQ-KK, AKs, AKo. Mixed: AA, JJ, 88-99, ATs, A2s-A5s, KJs, QTs+, T9s, 98s, 87s, AQo.

Always fold
A6s-A9s, K5s-KTs, Q8s-Q9s, J8s+, T8s, ATo-AJo, KJo+, QJo, JTo
Always call
TT, 55-77, AJs-AQs, KQs, 76s, 65s, 54s
Always all-in 99.84bb
QQ-KK, AKs, AKo
Mixed
AA, JJ, 88-99, ATs, A2s-A5s, KJs, QTs+, T9s, 98s, 87s, AQo
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.