PokerSolver
PokerSolver/6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 4-bet 17.25bb

SB vs CO 4-bet 17.25bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO opens 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb · Small blind to act

6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 26.71bbYour cards?
7.5bb
1bb
17.25bb

Tap your two cards.

Small blind's range

314 of 1,326 combos get here
Fold 52.5%Call 33.8%Raise 37.95bb 13.3%All-in 199.84bb 0.4%
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 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 200bb?

CO opens 2.5bb, SB 3-bets to 7.5bb, CO 4-bets to 17.25bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 200bb: the small blind (SB) folds 52.5%, calls 33.8%, raises 37.95bb 13.3% and goes all-in 199.84bb 0.4%. Always call: JJ-QQ, 22-77, AQs. Always raise 37.95bb: KK+. Mixed: 88-TT, AKs, A3s-AJs, KTs+, QTs+, JTs, T8s+, 86s+, 76s, 65s, 54s, AKo.

Always fold
A2s, K5s-K9s, J9s, T7s, AJo-AQo, KJo+, QJo
Always call
JJ-QQ, 22-77, AQs
Always raise 37.95bb
KK+
Always all-in 199.84bb
No hand plays this every time
Mixed
88-TT, AKs, A3s-AJs, KTs+, QTs+, JTs, T8s+, 86s+, 76s, 65s, 54s, AKo
Settings: 6-max · 200bb · 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, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 28.67). 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.