SB vs CO 3-bet 4bb
6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · UTG opens 2bb, CO 3-bets to 4bb · Small blind to act
6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 8.46bbYour cards?
0.5bb
1bb
2bb
4bb
Tap your two cards.
Small blind's range
1,326 of 1,326 combos get hereFold 94.2%Call 0.6%All-in 19.84bb 5.2%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind (SB) when UTG opens 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?
UTG opens 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the small blind (SB) folds 94.2%, calls 0.6% and goes all-in 19.84bb 5.2%. Always all-in 19.84bb: KK, TT-JJ, AKs, AKo. Mixed: AA, QQ, 66-99, A9s-AQs, A6s, A2s, AQo.
- Always fold
- 22-55, A7s-A8s, A3s-A5s, K2s+, Q2s+, J2s+, T2s+, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A2o-AJo, K2o+, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
- Always call
- No hand plays this every time
- Always all-in 19.84bb
- KK, TT-JJ, AKs, AKo
- Mixed
- AA, QQ, 66-99, A9s-AQs, A6s, A2s, AQo
Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.
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.