SB vs BTN 4-bet 11.5bb
6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb · 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
6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 18.46bbYour cards?
5bb
1bb
11.5bb
Tap your two cards.
Small blind's range
298 of 1,326 combos get hereFold 49.4%Call 23.8%All-in 39.84bb 26.8%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind (SB) when BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?
BTN opens 2.5bb, SB 3-bets to 5bb, BTN 4-bets to 11.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the small blind (SB) folds 49.4%, calls 23.8% and goes all-in 39.84bb 26.8%. Always call: 66, A9s-ATs, KJs. Always all-in 39.84bb: QQ-KK, AQs+, AQo+. Mixed: AA, 99-JJ, 55, AJs, A4s-A7s, K9s-KTs, QTs+, JTs, ATo-AJo, KQo.
- Always fold
- J9s, T9s, 98s, A8o-A9o, KTo-KJo, QJo, JTo
- Always call
- 66, A9s-ATs, KJs
- Always all-in 39.84bb
- QQ-KK, AQs+, AQo+
- Mixed
- AA, 99-JJ, 55, AJs, A4s-A7s, K9s-KTs, QTs+, JTs, ATo-AJo, KQo
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.